Vinylacetylene
[建] 乙烯基乙炔
??? 情景例句
You are wonderful with kids.
你對小孩子有一套。
How about on Tuesday afternoon of next week? Is that okay with everyone?
下星期二下午怎樣？各位沒有意見吧？
drawing the particle first towards the advancing wave,
先把微粒拉向前移的海浪，