将这些类放到恰当的位置使其可用。

Place these classes anywhere they can be available.

youdao

是的，不错，但是你得把线条置于最恰当的位置。

Well, yes, but you have to get them in exactly the right place.

youdao

它回归到恰当的位置，充当有用的工具，用则拿出，不用则收好。

It returns to its right place, as a useful instrument, which is used when necessary and put aside when not needed.

youdao