“我在图书馆负责借书”英文怎么说？

I'm responsible for lending books in a library.

I am in charge of lending books in the library。（I am a library staff）

I'm a librarian.
就这样就够了

I am in charge of checking out books in the library.
Check out-借出图书
Check in-还入图书
不太清楚英国是不是有不同的说法，但是这在美国绝对是地道说法。

I am in charege of lending books in the library .
I take charege of lending books in the library .

I am the keeper in this library。