把它保持在那里，然后每天偶尔看看。

Keep it there and read it occasionally throughout the day.

youdao

光线照射不到波束的中心，在那里微粒被受热的空气分子保持在平衡状态。

The heated air molecules keep the object balanced in the dark center.

youdao

光线照射不到波束的中心，在那里微粒被受热的空气分子保持在平衡状态。

The heated air molecules keep the object balanced in the dark center.

youdao