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abbr. 上下文无关文法；控制流图control flow graph
🗣️ 情景例句
Oh, it's a quarter to four,
噢 ，差十五分就四点了，
It's Kate's.
是凯特的。
Even men who can hardly drive a nail in straight are supposed to be born electricians, carpenters, plumbers and mechanics.
甚至那些连一枚钉子都钉不直的男人都被认为是天生的电工、木匠、水管工和机械师。