Levoglucosan
(=levulose)左旋葡聚糖
🗣️ 情景例句
In order to catch fish, you have to do this.
要钓鱼你就得这样。
I wondered if you could buy me some pencils?
我不知道你是否能替我买铅笔？
Only good scouting is likely to preserve the freedoms so dear to the heart of the eternal Boy Scout.
只有优良的童子军活动才能保持不朽的童子军所衷心热爱的各项自由。