Hydracid
n. 氢酸
🗣️ 情景例句
I was quite surprised when I read in your letter that you had decided not to finish your studies at the university.
当我在你的信中看到你已决定终止大学学业时感到很是惊讶。
My father is over 60 years old.
我父亲已年过六十了。
The students are going to take the test in two days' time.
学生们准备在两天后就接受测验。