Ethylidene (di)fluoride
[化] 亚乙基二氟; 1,1-二氟乙烷
🧩 词语组成解析
diethyl ether[化]乙缩醛
🗣️ 情景例句
His studies haven't been inproving lately.
他的学业最近没什么进步。
There are many training classed and night classes.
有许多培训班与夜校。
It's often cold in December, January and February.It snows sometimes.
12月、1月和2月常常很冷，有时还下雪。