Jack warned him not to mess about with married women.

杰克警告他不要和已婚妇女乱搞.

You can't really mess about too much with organs that people need to live.

你不能对人们赖于生活的器官做太多的手脚。

Come on, you guys, -start doing some work, don't just mess about all day!

来吧，伙计们做点正经事吧，不要整天胡混！