the weak link (in the chain)
成語所屬單字chain
the weak link (in the chain) — 慣用語
1. The part of a system or group that is most likely to fail or cause problems.
1.慣用語
釋義
薄弱環節
The part of a system or group that is most likely to fail or cause problems.
例句
Brian's poor communication skills were the weak link in the team.
Is the old server the weak link in your network security?