chug
[tʃʌɡ]
vi.
发出（持续而单调的）短声，发出突突声;
（发动机等）咔嚓咔嚓地响;
（火车、汽船等）咔嚓咔嚓地前进;
n.
（发动机缓慢运转时发出的）突突声;
例句:
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In the distance I could hear the chug of farm machinery.
离老远，我都能听到农机具的突突声。
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Indeed several songs chug by placidly, hamstrung by Burnett's generic tropes.
来自BBC
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As the operating point crosses over the stability boundary, the chug amplitude disappears.
当工作点越过稳定性边界时, 低频不稳定的振幅逐渐消失.
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Busy boasts chug and scurry about the river - racy speed boat, stolid, snorting tugs.
繁忙的船只在河上鸣叫着来来往往 - --高速快艇和笨头笨脑喘着气的拖驳.
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T. Rex's Jeepster then settles into an understated chug while Daniel emotes enigmatically.
来自BBC
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The showy virtuosity of previous albums was replaced by the chugga-chug riffola of Rapid Fire.
来自BBC