Permutit ethods
[医] 人造浮石法(检尿氨)
🧩 词语组成解析
[机] 人造沸石
🗣️ 情景例句
About fifteen minutes.
大约十五分钟吧。
I have two days off a week.
我一周休息两天。
I think we should continue walking as long as we can see where we're going. I said.
“我想只要我们能看见我们朝哪儿走，我们就要继续走下去，”我说，