🗣️ 情景例句
Who's the valedictorian of this class?
谁是班里优秀的毕业生？
Is that girl a student?
那个女孩是学生吗？
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。