直到...为止
先理解核心含义，再看它在真实句子里的用法。
直到...为止
up to the time of; until
She worked up until midnight.
她一直工作到午夜。
直到...为止
up to the time of; until
Use up until naturally, then get feedback on meaning, tone, grammar, and phrasing.
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Dictionary facts from AI_SUPPLEMENT.