势在必行 shìzàibìxíng to be imperative Origin Definitions Defs Strokes Stroke Words Sentences Sents 势 勢 shì noun situation (bound form) situation; circumstances; trend; tendency在 zài prepositionverb to depend on to depend on; to rest with; to be determined by必 bì adverb certainly certainly; surely; inevitably; necessarily行 xíng verb to do to do; to perform; to carry out; to engage in