Undercourse
底层, 垫层, 在花砖或瓷砖之下的底层
🗣️ 情景例句
Next week I'm taking my driving test.
我下星期考车牌。
He won't pay attention to anybody.You're just wasting your breath.
他不会注意任何人.你只是在浪费你的时间。
She was soon out of breath, but she continued to run.
只追了一会儿便上气不接下气了，但她还是继续追赶。