Doorstepping
(doorstep 的现在分词) n. 门阶
🗣️ 情景例句
Don't worry, Richard.
别担心， Richard。
We used to have a lot of fun when we were that age.
当我们是变老时，我们过去常有很多趣事。
May I ask some questions?
我可以问几个问题吗？