the most vulnerable or insecure part of a system
系统中最脆弱或不安全的部分 (xitong zhong zui cui ruo huo bu an quan de bufen)
"Humans are often the weak link in cybersecurity."
"人类往往是网络安全中的薄弱环节。" (renlei wangwang shi wangluo anquan zhong de boruo huanjie)
To focus closely on something
to prepare for the future
beyond control; off the usual path
to have no more time available to complete something
to not trust someone much
to start having doubts about a decision you have made
