bottlenecks
n. 瓶颈( bottleneck的名词复数 ); 瓶颈路段（常引起交通堵塞）; （尤指工商业发展的）瓶颈; 阻碍
释义与例句
n.
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1.
plural of bottleneck
v.
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1.
third-person singular simple present indicative of bottleneck