roots
n.
根( root的名词复数 );
根源;
词根;
（数学用语）方根;
v.
（指植物）生根成长，种植（植物）( root的第三人称单数 );
翻寻;
铲除;
使（某事物）深深扎根;
例句:
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This was Nirvana getting back to their rawer roots.
来自BBC
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Mr Zuma had a solid reputation as a grass roots organiser.
作为一个民众的组织者，祖玛先生名声甚佳。
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You have to join the party at grass-roots level.
你得参加基层党组织。
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Lean the plants against a wall and cover the roots with peat.
把植物靠墙摆放，用泥煤盖住根部。
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It fails to rise above its dated britpop roots.
来自BBC
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This is a sad departure from Congress's roots.
来自WSJ