Olefins
n. 烯烃; 链烯
🗣️ 情景例句
I love mashed potatoes, and also boiled, baked, scalloped or fried.
我很喜欢吃土豆泥，还有煮土豆、烤土豆和炸土豆我都喜欢。
There is no general rule without some exception.
普遍规律必有例外。
The path led to a tiny village perched on the steep sides of a mountain.
顺着小路，我们来到一个座落在陡峭山坡上的小村庄。