Alkylene
亚烃基, 烯化, 烷撑
🗣️ 情景例句
He is still unable to express himself in English.
他仍然不能用英语表达自己的意思。
Pardon me.
请原谅。
Two days alter, Louis Bleriot arrived near Calais with a plane called 'No.XI'.
两天之后，路易斯。布莱里奥驾驶一名为“11号”的飞机来到加来附近。