bottleneck
US /ˈbɑː.t̬əl.nek/
UK /ˈbɑː.t̬əl.nek/

1.
瓶颈, 堵塞点
a point of congestion in a production system or traffic flow
:
•
The narrow bridge creates a bottleneck during rush hour.
狭窄的桥梁在高峰时段造成瓶颈。
•
Lack of skilled workers is a major bottleneck in our production line.
熟练工人短缺是我们生产线的主要瓶颈。