动词
中文翻译：保持
同义词：
['maintain', 'preserve', 'sustain']
例句：
-
1. We need to keep the temperature between 20 and 25 degrees Celsius.
我们需要将温度保持在20到25摄氏度之间。
-
2. The team kept their heads up during the tough times.
在艰难时期，队伍保持了士气。
-
3. The company keeps a close eye on its competitors.
该公司密切关注其竞争对手。