Pertest
percolation test(ing) 渗透试验
🗣️ 情景例句
You do. You do. There's a book here.
当然 ，当然。书要出版。
You've got no ID card, boy!
你是小孩吧，怎么没带身份证呀。
Excuse me. What's the time, please?
对不起，请问几点了？