英汉词典

1. (原子)核
    The nucleus of an atom or cell is the central part of it.

    e.g. Neutrons and protons are bound together in the nucleus of an atom.
           在原子核里，中子和质子是结合在一起的。

2. (组织的)核心，中心
    The nucleus of a group of people or things is the small number of members which form the most important part of the group.

nucleus在线翻译

    e.g. The Civic Movement could be the nucleus of a centrist party of the future.
           公民运动的成员可能会成为未来中间派政党的核心。