Diphenylethylene
1, 2-二苯乙烯
🗣️ 情景例句
Yes. Glad to meet you, sir.
是的，很高兴见到你，先生。
It's hard to say.
很难说。
All the other boys are Chinese. All of the Chinese students are Young Pioneers.
其余的男孩都是中国人。所有的中国学生都是少先队员。