(每日一词) nucleus

diagram-of-nucleus

Nucleus /ˈnjuːklɪəs/ n. 核(细胞核, 原子核, 核心)

1) 词根: nucle- 核(nucle-nu-没有+clear/clean 清除/干净的)

2) 后缀: -us 名词后缀 (radius 半径)

3) 扩展: nuclear reactor 核反应堆; nuclear weapon 核武器

e.g. Researchers are studying the nucleus to develop cleaner energy sources. 科学家们研究原子核以开发更清洁的能源。

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