Ergostane
麦角甾烷
🗣️ 情景例句
All right.
行了。
We've got to get a refrigerator for the kitchen.
我们必须有一个电冰箱放在厨房。
If there had not been a hard layer of rock beneath the soil, they would have completed the job in a few hours.
如果不是因为土壤下面有一层坚硬的岩石，他们的营救工作仅用几个小时就可以完成了。