1. 不变的：circuitry电路 | unvarying不变的 | arrangement装置

2. 不变的/一定的：unvarnished /未涂漆的/无装饰的/原样的/ | unvarying /不变的/一定的/ | unveil /揭开/揭幕/除去...的面纱/显露/除去面纱/

1. 始终如一的；恒久不变的；一贯的
    If you describe something as unvarying, you mean that it stays the same and never changes.

    e.g. ...her unvarying refusal to make public appearances.
           她始终拒绝公开露面

1. always the same
    showing a single form or character in all occurrences

    e.g. a street of uniform tall white buildings

    Synonym: uniform

2. unvarying in nature

    e.g. maintained a constant temperature
           principles of unvarying validity

    Synonym: changelessconstantinvariant

3. lacking variety

    Synonym: unvaried