No. 744 in Chinese
不得
"不得" means "must not" or "cannot."
In a sentence
学生不得在课堂上玩手机。
Students must not use their phones in class.
This usage of '不得' means 'must not' or 'not allowed to', expressing prohibition.
这些信息不得泄露。
This information must not be disclosed.
Here '不得' signifies a strict prohibition against an action, often used in formal or legal contexts.
由于天气原因，航班不得不被取消。
Due to weather conditions, the flight had to be canceled.
In this case, '不得不' forms a fixed expression meaning 'have to' or 'no choice but to', indicating necessity or compulsion.
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