如一个正则表达式

求正则表达式 在以下字符串中搜索
  </tr>                                
                                <tr>
                                    <td class="td01" width="80px">
                                        【下载次数】&nbsp;</td>
                                    <td class="td01" colspan="3">
                                      37&nbsp;次</td>
                                </tr>
                                <tr>搜索出:【下载次数】 到 次 的所有字符串 表达式该如何写 我自己写成:【下载次数】\s.*次 却不起使用