atom
n. 原子
An atom is the smallest amount of a substance that can take part in a chemical reaction.
A methane molecule is composed of one carbon atom attached to four hydrogens.
甲烷分子由1個碳原子與4個氫原子構成。
1. (physics and chemistry) the smallest component of an element having the chemical properties of the element
2. (nontechnical usage) a tiny piece of anything
molecule, atom, particle, speck, grain
這些名詞均有"粒,微粒"之意。
The neutrons and protons form the core of the atom.
中子和質子構成了原子核.
Alcohol: Organic compounds characterized by a hydroxyl group ( OH ) bonded to a carbon atom.
醇 ( 酒精 ): 是有機化合物.它是一個氫氧團和碳原子的結合.
That cannot get up an atom of sympathy for them.
那並不能激發起人們對他們的絲毫同情.
We hadn't an atom of food.
我們沒有一點食物了.
Matches the previous atom zero or one times, while consuming as little input as possible.
匹配前面的原子零次或一次, 但儘可能少地消耗輸入.