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一种活性炭
🗣️ 情景例句
Mr. Harrison, how nice to meet you again.
哈里森先生，真高兴再见到你。
My Biochem lectures are in the morning, and the labs are in the afternoon.
生物化学的课安排在上午，实验在下午。
We'll take that one.
我们就买那种。