at home on something

• 熟悉；精通

at home on something的用法和样例：

例句

1. I needed some orientation at this stage.
   我在这个阶段需要熟悉情况。
2. The speaker is great on international affairs.
   作报告的人对国际事务非常熟悉。
3. He's quite clued-up on American literature.
   他对美国文学很精通。
4. The Canadian-Japanese is at home in both languages.
   那个加拿大籍日本人两种语言都精通。

词汇搭配

• at home on something 熟悉