"sag" in Chinese (Simplified)
下垂下陷
Definition
因重量、年老或缺乏支撑而中间下垂或弯曲。有时也用来形容某人或事物失去力量或活力。
Usage Notes (Chinese (Simplified))
多用于结构物或身体部位（如屋顶、脸颊）。常见搭配有“sagging skin”、“sag under the weight”。口语中有时用来形容人泄气或无精打采。
Examples
The old shelf started to sag in the middle.
旧的架子中间开始**下垂**。
Her skin began to sag with age.
随着年龄增长，她的皮肤开始**下垂**。
The rope will sag if you hang something heavy on it.
如果你挂重物，这根绳子会**下垂**。
By the end of the hike, my backpack was really starting to sag.
徒步结束时，我的背包真的开始**下垂**了。
His shoulders sagged when he heard the bad news.
他听到坏消息时，肩膀一下子**垂了下来**。
Be careful—the ceiling looks like it's starting to sag over there.
小心——那边的天花板好像开始**下陷**了。