定義 / Definition
[noun]
・the middle point or part.
・the point from which an activity or process is directed, or on which it is focused.
・a place or group of buildings where a specified activity is concentrated.
[verb]
・occur mainly in or around (a specified place).
・have or cause to have (a specified concern or theme).
・place in the middle.
— その他 例文 —
the center of a circle
円の中心
An atomic nucleus is a positively charged center of an atom, which is made of protons and neutrons.
原子核は、原子の中心にあるプラスの電荷を帯びた粒子で、陽 子と中性子からできている。
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