俟[竢]sì
? [書] （等待） wait: ～ 機(jī)進(jìn)攻 wait for an opportunity to attack; 一 ～ 準(zhǔn)備就緒， 即行公開展出。 The exhibition will be opened as soon as everything is in order.
另見 see also qí。
◆俟河之清 wait till the Yellow River runs clear water; once in a blue moon; wait for the millennium；
俟機(jī) wait for an opportunity; watch for one's chance