须知

須知
xūzhī
  1. key information
  2. instructions
  3. it must be borne in mind

CEDICT

  1. notice; prerequisites; rules (that must be known before starting something); instructions; points for attention; rules and regulations
  2. one should know that

Wiktionary

  1. 应该知道，一定要知道。
  2. 为使人于某事项之程序及办法知所遵守者。

重編國語辭典

Entry Composition

=1 须 xū
  1. must
  2. to have to
  3. to wait
=1 须 xū
  1. beard
  2. mustache
  3. feeler (of an insect etc)
  4. tassel
2 知 zhī
  1. to know
  2. to be aware

Related entries

训示 xùnshì
  1. to admonish
  2. instructions
  3. orders
指示 zhǐshì
  1. to point out
  2. to indicate
  3. to instruct
  4. directives
  5. instructions

classifier: 個

等到指示燈變成綠色。

Wait till the light turns green.

Source: Tatoeba