Polyyne

聚炔烃

🗣️ 情景例句

78 percent of black high-school graduates are unemployed.
百分之四十八的黑人高中毕业生失业。
Are they all non-reserved seats?
他们全部不预订的吗?
I didn't know he was the richest person in the world.
我不知道他是世界上最有钱的人。
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🔤 更多 P 开头的单词

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