He started libraries, since words were his metier, but had to give the books away, keeping only his dictionaries.

他办了几家藏书室，因是他的专业，但离开时不得不把书送，只带着他的典离开。

Her timing seemed strange to some, just as her metier was fading.

来说，她成功的时机似乎很奇怪，因她的专长正在消失。

French was never your metier, I seem to remember.

我记得法语不是你的强项。