时间:2025-07-26
例句:
Some dinosaurs had only rudimentary teeth、
有些恐龙只有未充分长成的牙齿。
The dinosaur became extinct before the appearance of man、
恐龙在人类出现以前就灭绝了。
How did the dinosaurs die out?
恐龙是如何灭绝的?
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