Neither of them is very big, but they become a larger river when joined together, and yet larger when joined by a third river.

两条河都不大，但汇合后便成了一条大河，而且在城市下游三英里又与第三条河相遇，就使得河流更加宽阔了。

youdao

By the time I was vice chancellor, the Senate had become a much larger and a much more democratic body.

到我做副校长的那个时候，大学评议会已经成为一个更大、更民主的机构了。

《柯林斯英汉双解大词典》

The unit has become part of a larger department and no longer exists as a separate entity.

这个单位已附属于一个大的部门，不再作为一个实体独立存在。

《牛津词典》

Drought and floods "are projected to become a larger problem in many temperate and humid regions".

BBC: Climate change warning

As we have grown to become a larger channel, Maker has provided adaptive support as we developed.

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As governments procrastinate on a truly global problem, piracy will become a larger and deeper rooted problem.

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