Substratification
分层
🗣️ 情景例句
Are you through with your work?
你工作做完了吗？
May I ask you where you are from?
我能问你从哪里来吗？
He had known that it was not safe to travel alone in the forest near the coast.
也听说过独自一人在海边的森林里走是不安全的。