Cyclonene
[建] 环酮烯, 胡椒基环己烯酮
🗣️ 情景例句
Did you know
你知道
Would you let me know your fax number?
可以告诉我您的传真机号码吗？
Predicting the future is notoriously difficult.
众所周知，预测未来是非常困难的。