不失时机

Explanation: Loss: delay, missed. Time: a time-sensitive opportunities. Miss the current opportunity. Refers to the act and the right time to seize the favorable opportunity. 　　Usage: Verb-object type; as predicate, object; with compliment 　　Source: Zhou Enlai, "On the party's" six "research": "At this time two months away from the KMT split, if the ... ... trying to do, but also seize the opportunity." 　　Examples: Then two months away from the KMT split, if the ... ... trying to do, but also ~. (Zhou Enlai, "On the party's" six "research")