Undersole
大底, 鞋底
🗣️ 情景例句
When you're ready to get off, remember to press the button near your seat.
当你要下车时，记得按你座位旁的按钮。
Send a postcard to me when you arrive in Shanghai.
你到上海以后给我发张明信片。
Sorry. It's at home. But you can buy one in the shop.
对不起，我的格尺在家里。你去商店里买一个吧。