Premutation
前突变
🗣️ 情景例句
who used to run the drugstore in town.
他过去在镇上经营药房。
Apparel makes the man.
马靠鞍装，人靠衣装。
The airport was built years ago, but for some reason it could not be used then.
机场是许多年前建的，但由于某种原因当时未能启用。