蜻蜓點水 [ㄑㄧㄥ ㄊㄧㄥˊ ㄉㄧㄢˇ ㄕㄨㄟˇ; qing1 ting2 dian3 shui3] lit. the dragonfly touches the water lightly superficial contact (idiom) ◄ ►