a secret advantage that a person can use when the need arises

秘密王牌, 隐藏优势
to save a person from receiving criticism, punishment, blame, etc.

给自己留后路, 先把自己撇清
to take action in order to save a person from being criticized, punished, blamed, etc.

替人挡责, 帮人撇清责任
to no longer partake in a failing business, activity, etc. to prevent further damage or losses

及时止损, 趁早抽身
a time of financial difficulty or a period of challenge

不时之需, 困难时候
a willingness to use any given opportunity or situation to one's advantage

一有机会就为自己谋利, 善于抓机会占便宜
to immediately prevent something, particularly something problematic, before it has time to develop

扼杀在萌芽状态, 趁早制止
to prevent something from developing into something worse

阻止局面继续恶化, 遏制颓势
to take action while the opportunity exists

趁热打铁, 趁机会还在赶紧行动
to carefully examine a situation before making a final decision

评估形势, 盘点现状
to realize how a situation is about to develop in order to be able to properly prepare for any potential problems or changes that one might encounter

探探风向, 摸清形势
to think about something very carefully before doing it

慎重考虑, 不要草率行动