形容词
中文翻译：内部的
同义词：
['core', 'innermost']
例句：
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1. The inner workings of the machine are not easy to understand.
机器的内部工作原理不容易理解。
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2. The inner circle of friends is where we share our deepest secrets.
最亲密的朋友圈子是我们分享最深层秘密的地方。
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3. The inner voice often speaks louder than the outer one.
内心的呼声往往比外界的声音更响亮。