broadens
v.
使…变宽，扩展( broaden的第三人称单数 );
增长（经验、知识等）;
例句:
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Here the Nile broadens out between the huge granite boulders.
尼罗河在此处变宽，从两块花岗岩巨石间穿过。
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They say that travel broadens the mind.
他们说旅行能够开阔心胸。
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Travel broadens the mind.
旅行可以使人胸襟开阔.
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It broadens the set of clients for whom these are appropriate.
来自WSJ
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In so doing, it complements BBC drama's activities and broadens the BBC brand.
来自BBC
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President Bush signed a bill into law Thursday that broadens the government's surveillance power.
来自SA