注音 一ˊ ㄊㄨㄢˊ ㄇㄛˋ ㄕˋ
拼音 yí tuán mò shì
▸ 瞭如指掌
基本釋義
⒈ 心裡有很多疑問，沒有解開。
瞭如指掌： 形容對情況極為清楚。例對他們的活動，他完全瞭如指掌。英have sth.at one’s fingertips; know as one know his ten fingers; know like a book; know as well as a beggar knows his bag;