题目内容

The manuscript of the oral presentation is quite different from the way you write a paper in that the presentation covers all your neat ideas.

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一个力不能等效为一个力偶，一个力偶也不可能用一个力来等效。

This lesson focuses on both school and job application materials.

可以为卫星提供一个恒定的太阳方位角的经典轨道是（）。

To apply for a student visa to the USA, you have to be prepared for a visa interview.