Levoglucosan
(=levulose)左旋葡聚糖
🗣️ 情景例句
OK. I'll show you around. Let's go outside.
可以，我带您转一转。走吧。
Which would you rather have--steak or fish?
你想要牛排还是鱼？
I can't see them there. Did you buy any this morning?
桌子下面没有。你今天早晨买了吗？