翻譯P.28

To simplify things , chemists represent each element by a one- or two-letter symbol . Table 2-1 lists the elements and their symbols that you need to know to understand the material in this book . Just four elements -oxygen, carbon, hydrogen, and nitrogen-make up about 96% of your body weight and that of most other living things.
為了簡化東西，化學家以一個一兩個字母符號代表每種要素。表格2-1 列舉要素和你需要知道理解在這本書裡的素材的他們的符號。僅僅4 種元素 -大約你的體重和大多數其他有生命的東西的的96%的氧，碳，氫和氮構成。
The most basic building block of matter is an atom : the smallest unit of matter into which an element can be divided and still its chemical properties . The idea that all elements are made up of atoms is called the atomic theory . It is the most widely accepted scientific theory in chemistry.
事情的最基本的組成部分是一個原子︰ 一種要素可以被分的事情和仍然它的化學性能的最小的單位。 全部元素由原子組成的想法被叫為原子理論。 這是在化學方面的最廣泛接受的科學理論。