Heterobetulin
[化] 杂桦木醇; 杂白桦脂醇
🗣️ 情景例句
How many courses are you taking this semester?
这学期你选了多少课？
I think his fish is a little bigger than mine.
他的鱼似乎比我的大了一点。
In vain they rush frantically round from place to place,
他们到处狂奔乱跑，