He became ill through overwork.是什么意思？

He became ill through overwork.

他因工作过于劳累而病倒了.

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

became

v. 变为，成为（ become的过去式 ）；

例句
It became very clear that the incident was not just an aberration, it was not just a single incident.
事实已经很清楚，这件事不是偶发的，它并不是一起孤立的事件。

ill

adj. 不好的，恶意的，有病的，不吉利的；adv. 坏，不利地，令人不满地；n. 伤害，困难，问题，弊端；

例句
She bore no ill will. If people didn't like her, too bad...
她没有恶意。如果人们不喜欢她，那就太糟糕了。

through

prep. 通过，穿过，经由，透过，凭借；adv. 从头到尾，彻底，自始至终；adj. （电话）接通，通话完毕，有洞的，直达的；

例句
The proposal was instantly voted through with two to one in favour, accompanied by enthusiastic applause...
在热烈的掌声中，提案以2比1的优势很快通过了表决。

overwork

vt.&vi. 工作过度或时间过长，把…做过头，对…使用过度：过于经常使用，装饰：把…的表面加以装饰；n. 过度工作；

例句
To disobedient company the worker amerce of overwork requirement breaks the law.
对不服从公司加班要求的职工罚款是违法的.