keep indoors的用法和樣例：
例句
- All rooms are equipped with electric heaters to keep indoor temperatures constant at15-2.0.
所有的房間都裝備有電爐以保持室內撮氏15－20度的常溫。 - Mother was advised to keep indoors for a week after cough seemed better.
當母親咳嗽似乎好一些后，別人建議她一個星期不要外出。 - You ought to keep indoors with that heavy cold.
你患重感冒應該留在屋裡。
