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英安流纹岩
🗣️ 情景例句
Could you please tell me the departure times?
你能告诉我出发的时间吗？
No good building without a good foundation.
基础不好，建筑不牢。
namely 6 million million miles.) Radio waves also travel at the speed of light,
即6万亿英里）。无线电波也是以光速传播的。