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一种活性炭
🗣️ 情景例句
The bridge is about three hundred and eighty-five feet long.
桥长约三百八十五英尺。
I'm very glad to meet you.
认识你很高兴。
there is no evidence that the total amount of activity is any less.
但没有迹象表明，其活动总量有任何减少。