sag

松弛；下跌；漂流；萧条中释n

下垂；下降；萎靡英释中释vto hang down or bend in the middle, especially because of the weight of something

1 cable sag,绳擞度

1 The branch sagged under the weight of the apples..树枝被苹果压弯了。

2 The skin around my eyes is starting to sag..我眼睛周围的皮肤开始下垂了。

3 a sagging roof.凹陷的房顶