Celestinian
天青石
🗣️ 情景例句
I know.
我知道。
In university, students are trained to become teachers and engineers.
大学的学生被训练成为教师和工程师。
When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was killed.
不久前，一架轻型客机偏离了航线，在山区坠毁，飞行员丧生。