Acetylenedivinyl
[化] 乙炔基丁间二烯; 3,5-己二烯-1-炔
🗣️ 情景例句
And then he takes it back
然后 ，他就把它收回去
Am I your teacher?
我是你们的教员吗？
I went on walking, bending down because the roof of the cave was not very high.
因为洞顶不是很高，我继续弯着腰往前走。