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来源:雅诚德英语网
Swarms of tremors are usually, though not always, a sign that an eruption is coming.
接二连三的震动通常但并不一定就是火山喷发即将来临的信号。
Swarms of tremors are usually, though not always, a sign that an eruption is coming.
接二连三的震动通常但并不一定就是火山喷发即将来临的信号。