sì hé zhī qīng
- wait till the Yellow River runs clear water
- once in a blue moon
- wait for the millennium
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control valves,
control-animal,
control-driven,
controlet,
controlfin,
controlgear,
controllability,
controllable,
controllable-pitch,
controlled,
相似单词
驷不及舌,
驷马,
驷马高车,
驷马难追,
俟,
俟河之清,
俟机,
涘,
耜,
梩,