Diunsaturated
二不饱和的甘油酯
🗣️ 情景例句
We're strangers here; can you help us find ...?
我们在这里人生地不熟，您能告诉我们__在哪里吗？
Do we have to wear the helmets?
我们得戴上防护帽吗？
Now she's holding it for Jim. Jim is climbing up the ladder.
现在她在给吉姆扶着梯子。吉姆正在爬上梯子。