n. 停留；依靠；妇女胸衣（stay 的复数）
v. 停留；保持（stay 的三单形式）；居住
1.Anyone who keeps learning stays young.
任何持续学习的人，都可以保持年轻。
2.She stays with her aunt.
她留下来陪阿姨。
3.We have a beautiful city and we pray it stays that way.
我们拥有一个漂亮的城市，并祈祷永远如此。
4.The eye controlled by the sleeping hemisphere keeps shut, while the wakeful hemisphere's eye stays open and alert.
由睡眠大脑半球控制的眼睛保持关闭，而清醒大脑半球的眼睛保持睁开和警觉。
5.The standing leg locks so it stays straight.
（马）站立的腿被锁住了，所以它能保持笔直。
6.He stays in the middle.
他保持中立。