他们每天必须工作8小时。

They're required to work eight hours every day.

Source: Tatoeba

Sentence Composition

1 他们 tāmen they; them
2 每天 měitiān every day
3 必须 bìxū
  1. to have to
  2. must
  3. compulsory
  4. necessarily
4 工作 gōngzuò
  1. to work
  2. (of a machine) to operate
  3. job
  4. work
  5. task

classifiers: 個, 份, 項
5 小时 xiǎoshí hour

classifier: 個