smoother
['smu:ðə]
n.
弄平的人，路面平整机，修光工;
adj.
平稳的( smooth的比较级 );
光滑的;
磨平的;
（言谈）流利的;
例句:
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So-called alluvial diamonds are smoother edged than mined diamonds.
来自BBC
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This makes the whiskeys much smoother.
这样一来，威士忌就醇和多了。
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The water is smoother above the dam.
坝的另一边水面平静些.
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The luxury model gives a smoother ride.
坐这种豪华型汽车感觉很平稳.
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Hire a pilot who charts a smoother ride.
来自WSJ
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Why is the ride smoother for short-term bonds?
来自WSJ