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To emphasize the necessity of remembering something.
务必记住，明天早上八点开会。
Remember, the meeting is at 8 AM tomorrow—make sure to be there.
老师说：'务必记住这个定理，它很重要。'
The teacher said, 'You must remember this theorem—it's very important.'
Commonly used in instructions, warnings, or reminders to stress importance. Often appears in written or spoken directives.
务必记住 is stronger than '记住' (just 'remember'). It implies a command or urgent reminder, similar to 'make sure you remember' in English. Use it when the consequence of forgetting is serious.
务必记住 is formal and instructional. In casual speech, use '一定要记住' or '千万别忘了'.
务必 (wù bì) = 'must' + 'necessarily'; 记住 (jì zhù) = 'remember'. The phrase combines two imperative structures to emphasize urgency and importance.
Used in formal or instructional contexts to convey strong emphasis. Often appears in notices, textbooks, or direct speech to ensure the listener/reader does not forget the instruction.