Undersoil
n. 底土, 下层土
🗣️ 情景例句
Don't interfere in matters that do not concern you!
别管闲事！
I played downstairs last night.
我昨晚在楼下玩。
Why? English is the first language in none of these countries.
为什么？在这些国家中英语都不是第一语言。