bottleneck

瓶颈、障碍、症结

The approval process has become the main bottleneck in production.

审核流程已成为生产上最主要的瓶颈。

窄路段、堵塞路段

Traffic slows to a crawl at the bottleneck near the bridge.

车流到桥边的窄路段就慢得像在爬。

瓶颈、瓶口

He gripped the bottleneck tightly and poured the water out.

他紧握瓶颈，把水倒了出来。

阻碍、拖慢、卡住常用被动

The whole project was bottlenecked by a shortage of chips.

整个专案因为晶片短缺而卡住。