They make the door difficult to swing open and close, but they work.

它在开关门时的摇晃使得开门不方便，但是它们确实起作用。

youdao

They make the door difficult to swing open and close, but they work.

它在开关门时的摇晃使得开门不方便，但是它们确实起作用。

youdao