以水投石 yǐshuǐtóushí to act in vain Definitions Defs Origin Strokes Stroke Words Sentences Sents 以 yǐ preposition by means of to use; by means of; with; using the tool or method introduced水 shuǐ noun water water; a liquid, juice, or lotion投 tóu verb to throw to throw; to fling; to toss something toward a target石 shí noun stone rock; stone; (bound form) made of stone; rock-like
