Acetylenedichloride
[化] 乙炔化二氯; 对称二氯乙烯; 对称二氯代乙烯; 二氯乙烯; 1,2-二氯乙烯
🗣️ 情景例句
I am.
的确这样。
Misfortunes test the sincerity of friends.
患难见友情。
This shows how long it was before we deemed it necessary to make sure that all our children could share in the knowledge accumulated by the'happy few' during the past centuries.
这说明，经过了多么漫长的时间之后，我们才认识到，有必要确保我们的孩子享有多少个世纪以来由‘少数幸运者’所积累起来的知识。