熟識

熟识
shúshi
  1. to be well acquainted with
  2. to know well

CEDICT

Homographs

熟識 shúshí

Entry Composition

1 熟 shú
  1. ripe; mature
  2. thoroughly cooked; done
  3. familiar; acquainted
  4. experienced; skilled
  5. (of sleep etc) deep; profound
  6. also pr. shóu
2 識 shí
  1. to know
  2. knowledge
  3. Taiwan pr. shì

Related entries

熟知 shúzhī to be well acquainted with
諳 ān
  1. to be versed in
  2. to know well
通 tōng
  1. to go through
  2. to know well
  3. (suffix) expert
  4. to connect
  5. to communicate
  6. open
  7. to clear
  8. classifier for letters, telegrams, phone calls etc
這條街通到哪裡？

Where does this street lead to?

Source: Tatoeba

掌握 zhǎngwò
  1. to grasp (often fig.)
  2. to control
  3. to seize (initiative, opportunity, destiny)
  4. to master
  5. to know well
  6. to understand sth well and know how to use it
  7. fluency
掌握一门外语很难。

Mastering a foreign language is difficult.

Source: Tatoeba