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held together

v. 联合(结合)

例句与用法:

The smallest particle into which an element or a compound can be divided without changing its chemical and physical properties; a group of like or different atoms held together by chemical forces.

分子能被分的没改变化学和物理成分的一个单元或化合物的最小粒子; 由化学力聚在一起的一组相似或不同的原子

The sheets are held together by paper clips.

这些单张由回形针别在一起。

A group of objects held together, as by tying or wrapping.

捆,包裹物通过包或绑而放在一起的一些东西