Percolation tests
[医] 渗漉试验
🧩 词语组成解析
n. 过滤, 浸透\\n[计] 渗透
n. 测验（test的复数）
🗣️ 情景例句
I've been meaning to ask you
我一直想问
I only regret that I have but one life to give for my country.
我抱憾的是，只有一次生命能献给祖国。
Good morning. I am. Everyone is here. No one is away.
早上好。我值日。大家都来了。没有人缺席。