持久 chíjiǔ HSK7 lasting Origin Definitions Defs Strokes Stroke Words Sentences Sents 持久战 chíjiǔzhàn prolonged war a war of long duration or a strategic conflict intended to wear down the opponent over time旷日持久 kuàngrìchíjiǔ protracted long and drawn-out over a period of time持久性毒剂 chíjiǔxìngdújì persistent agent