Read Edit View history 防患 fánghuàn guard against Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 防患 · fánghuàn · guard against 2026/03/04 防患 fánghuàn guard against to take preventative measures; to guard against accident or disaster 我们要防患于未然，在事故发生前就做好准备。 created sense Mar 4, 2026, 02:25 AM