at home in something
英
美
- 熟悉；精通
双语例句
- I needed some orientation at this stage.
我在这个阶段需要熟悉情况。 - Here is his home town which he knows up and down.
这儿是他十分熟悉的家乡。 - He is skilled in upstairs politics.
他精通上层政治。 - I am completely at home in mathematics.
我精通数学。
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