了如指掌
liǎo​rú​zhǐ​zhǎng

know thoroughly

了如指掌 liǎo​rú​zhǐ​zhǎng
know thoroughly idiom
to know something or someone extremely well; to be intimately familiar with something, as if looking at one's own palm

他对这里的地形了如指掌。

tā duì zhè​lǐ de dì​xíng liǎo​rú​zhǐ​zhǎng.

He knows the terrain here like the back of his hand.

Frequency
Movie subtitles
4.41 per million appears in 2% of films
Written text
1.66 per million

Cross-References

Referenced by

Sources
Definitions
CC-CEDICT
Frequency data
SUBTLEX-CHBCC Corpus (BLCU)