Methods for hydrogen ion concentration

methods

n. 方法, 方式；研究方法（method的复数）

for [fɚ]

prep. 为，为了;倾向于;关于;当作; conj. 因为，由于;

hydrogen ['haɪdrədʒən]

n. <化>氢;

hydro水+gen产生→氢

ion ['aiən]

n. <物>离子;

concentration ['kɑnsn'treʃən]

n. 集中;专心;关注;浓度;

con共同+centr中心+ation后缀→集中；浓缩

It's time you and I had a romantic weekend alone together.

是我们俩单独在一起过一个浪漫周末的时候了。

I'd like to change this ticket to the first class.

我想把这张票换成头等车。

On the subject of reading, Francis Bacon, who lived at about the same time as shakespeare, wrote these words, Some books are to be tasted, others to be swallowed, and some few to be chewed and digested. This good advice shows how it is possible to read

“有些书是应当尝尝滋味的，有些书是应当吞食下去的，有少数书是应当咀嚼和消化的。”这个忠告很好，它表明可以用不同的方法来阅读不同类型的书。