Allenic hydrocarbon
[化] 丙二烯系烃
🧩 词语组成解析
🗣️ 情景例句
I can hardly keep my eyes open.
我简直睁不开眼睛了。
They serve good food in this restaurant.
这个餐馆供应很好的食物。
No one could account for the fact that one of the boxes was extremely heavy.
其中有只箱子特别重，可谁也弄不清是怎么回事。