Dihydroxyacetophenone
[有化]二羟基苯乙酮
🗣️ 情景例句
You know something, Ellen?
知道一件事吗， Ellen？
Can I have a second-class one way ticket to Chicago,please?
请给我一张去芝加哥的单程二等票好吗？
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。