drills

[drilz]

n. 钻, 训练, 演习, 斜纹布
名词drill的复数形式

例句与用法：

The drill sergeant took the men on a ten-mile march and they were all ready to drop by the time they got back to barracks.

那个教官带领士兵们作了10英里的行军，结果他们回到军营时全都累得快要趴下了。

A form of opaque or dark-colored diamond used for drills.

墨金刚石一种不透明的或深色的钻石，用作钻(头)

You should finish your English grammar drills in the class.

你应该在课堂上完成语法练习。