Fissiography

裂变产物自摄像术

🗣️ 情景例句

We are, too.
我们也很兴奋。
There are one hundred pennies in every dollar.
每美元是一百美分。
But suppose the earth could be covered with sensors spaced one foot apart,
假设地球上可以布满传感器,每个相隔1英尺,
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