bide one's time 等待时机；等待良机

【例句】
I've been biding my time for years, just waiting for a chance like this.
多年来我一直在等待时机，就是在等待这样一个机会。

Lesser souls might have languished indefinitely in the deputy ministerial sinecure that Gorbachev tossed Yeltsins way as a consolation prize. But Yeltsin nursed himself back to both political and physical health and bided his time.
戈尔巴乔夫让叶尔钦当个没有实权的副部长，聊表补偿。比较平凡的人可能就一生消磨于斯，叶尔钦则借此机会疗养身体并恢复政治实力，同时静待时机转变。