字词 | 了如指掌 |
释义 | 了如指掌 liǎo rú zhǐ zhǎng know ... like the palm of one's own hand; as plain as pointing to one's hand; be thoroughly familiar with ...; clear like pointing at a palm; have fully grasped a subject, a situation, etc.; have sth. at one's fingertips; know ... as a person knows his ten fingers; know ... as well as a beggar knows his bag; know ... like a book; know sth. like the back of one's hand; know ... to one's fingertips; One has the knowledge of sth. so well in hand that one can point to it as one points to one's palm.: 他对这一带的地形了如指掌。 He knows the terrain of this locality like the back of his hand. |
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