Olefines
(olefine 的复数) [化] 烯烃; 链烯烃
🗣️ 情景例句
Now I can help diaper him.
我现在可以帮他换尿布了。
She refuses to make up her mind.
她拒绝下决心。
It is the natural frequency of emission of the hydrogen atoms in space and was discovered by us in 1951;
这个频率是空间氢原子释放的自然频率，是在1951年被人类发现的。