Thank you, Dr. NewVoice.

来源: EnLearner 于 2011-08-20 07:15:58 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

Two unequal stones were dropped to/on the ground at the same time.

Does this mean that the stones were released at the same time?

Or it means that the stones hit the ground at the same time?

Or it means that the stones were released and hit the ground at the same time?

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