Etileno
乙烯
🗣️ 情景例句
Are you ready, Alexandra?
想好了吗？Alexandra。
I like football best.
我最喜欢足球。
When he died, however, his brothers found it impossible to keep the secret any longer.
他死后，他的弟弟们才觉得无法再保守这个秘密了。