1. Let me catch you up on all the gossip.
   让我把所有的流言蜚语简要地说给你
2. It is easy for paper to catch on fire.
   纸很容易着火。
3. The girl kept catching on to her mother's skirt.
   小女孩一直紧紧地拉着妈妈的裙子。
4. Caught my hem on the stair.
   我的衣襟被钩在楼梯上
5. We would never catch him on the hop.
   我们永远不会当场抓到他。

　2个动词解释