get one's feet wet字面意思，是“把脚弄湿”。实际上，它的真实含义，却是“熟悉新情况，开始做，着手，动手，亲自参加”。

【例句】
Of course he can’t do the job right. He’s hardly got his feet wet yet.
当然他不能把工作做对。他基本上不熟悉情况。

Tom changed his job ,he will get his feet wet in writing.
Tom换了工作，他将开始尝试写作。