安装androidADT时的问题，求高手解决，我还是初学者

Cannot complete the request.  See the details.
Unsatisfied dependency: [com.android.ide.eclipse.ddms.feature.group 12.0.0.v201106281929-138431] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.core.runtime/3.5.0
Unsatisfied dependency: [com.android.ide.eclipse.traceview.feature.group 12.0.0.v201106281929-138431] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.core.runtime/3.5.0
Unsatisfied dependency: [com.android.ide.eclipse.hierarchyviewer.feature.group 12.0.0.v201106281929-138431] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.core.runtime/3.5.0
Unsatisfied dependency: [com.android.ide.eclipse.adt.feature.group 12.0.0.v201106281929-138431] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.core.runtime/3.5.0
Unsatisfied dependency: [com.android.ide.eclipse.ddms.feature.group 12.0.0.v201106281929-138431] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.ui/3.5.0
Unsatisfied dependency: [com.android.ide.eclipse.traceview.feature.group 12.0.0.v201106281929-138431] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.ui/3.5.0
Unsatisfied dependency: [com.android.ide.eclipse.hierarchyviewer.feature.group 12.0.0.v201106281929-138431] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.ui/3.5.0
Unsatisfied dependency: [com.android.ide.eclipse.adt.feature.group 12.0.0.v201106281929-138431] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.ui/3.5.0
Cannot find a solution where both Match[requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.ui/3.5.0] and Match[requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.ui/[3.4.0.I20080610-1200,3.4.0.I20080610-1200]] can be satisfied.
Cannot find a solution where both Match[requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.core.runtime/3.5.0] and Match[requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.core.runtime/[3.4.0.v20080512,3.4.0.v20080512]] can be satisfied.
Cannot find a solution where both Match[requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.ui/3.5.0] and Match[requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.ui/[3.4.0.I20080610-1200,3.4.0.I20080610-1200]] can be satisfied.
Cannot find a solution where both Match[requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.core.runtime/3.5.0] and Match[requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.core.runtime/[3.4.0.v20080512,3.4.0.v20080512]] can be satisfied.
Cannot find a solution where both Match[requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.ui/3.5.0] and Match[requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.ui/[3.4.0.I20080610-1200,3.4.0.I20080610-1200]] can be satisfied.
Cannot find a solution where both Match[requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.core.runtime/3.5.0] and Match[requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.core.runtime/[3.4.0.v20080512,3.4.0.v20080512]] can be satisfied.
Unsatisfied dependency: [com.android.ide.eclipse.adt.feature.group 12.0.0.v201106281929-138431] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.core.runtime/3.5.0
Unsatisfied dependency: [com.android.ide.eclipse.adt.feature.group 12.0.0.v201106281929-138431] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.ui/3.5.0
Unsatisfied dependency: [com.android.ide.eclipse.traceview.feature.group 12.0.0.v201106281929-138431] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.ui/3.5.0
Unsatisfied dependency: [com.android.ide.eclipse.traceview.feature.group 12.0.0.v201106281929-138431] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.core.runtime/3.5.0
Unsatisfied dependency: [org.eclipse.platform.ide 3.4.0.I20080617-2000] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.platform.feature.group/[3.4.0.v20080610-9I96EhtEm-T_5LxIsybz-3MdGZmOA3uwv7Ka_M,3.4.0.v20080610-9I96EhtEm-T_5LxIsybz-3MdGZmOA3uwv7Ka_M]
Unsatisfied dependency: [org.eclipse.rcp.feature.group 3.4.0.v20080324a-989JERhEk-jWnd5IY8K5tjxB] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.ui.workbench/[3.4.0.I20080606-1300,3.4.0.I20080606-1300]
Unsatisfied dependency: [com.android.ide.eclipse.hierarchyviewer.feature.group 12.0.0.v201106281929-138431] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.core.runtime/3.5.0
Unsatisfied dependency: [com.android.ide.eclipse.hierarchyviewer.feature.group 12.0.0.v201106281929-138431] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.ui/3.5.0
Unsatisfied dependency: [org.eclipse.platform.feature.group 3.4.0.v20080610-9I96EhtEm-T_5LxIsybz-3MdGZmOA3uwv7Ka_M] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.help.feature.group/[1.0.0.v20080603-7r7xEHJEJkZu5nE6Q4Qrtvu6JZ9L,1.0.0.v20080603-7r7xEHJEJkZu5nE6Q4Qrtvu6JZ9L]
Unsatisfied dependency: [org.eclipse.help.feature.group 1.0.0.v20080603-7r7xEHJEJkZu5nE6Q4Qrtvu6JZ9L] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.rcp.feature.group/[3.4.0.v20080324a-989JERhEk-jWnd5IY8K5tjxB,3.4.0.v20080324a-989JERhEk-jWnd5IY8K5tjxB]
Unsatisfied dependency: [com.android.ide.eclipse.ddms.feature.group 12.0.0.v201106281929-138431] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.ui/3.5.0
Unsatisfied dependency: [com.android.ide.eclipse.ddms.feature.group 12.0.0.v201106281929-138431] requiredCapability: org.eclipse.equinox.p2.iu/org.eclipse.core.runtime/3.5.0我的Eclipse是3.4的
这个怎么解决啊