名词
中文翻译：固体核心
同义词：
['core', 'center', 'core of例句：1. The solid core of the structure is made up of steel.（该结构的固体核心由钢制成。）']
例句：
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1. The solid core of the structure is made up of steel.
该结构的固体核心由钢制成。
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2. The core of the problem lies in the lack of communication.
问题的核心在于缺乏沟通。
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3. The solid core of the machine is strong enough to support its own weight.
这台机器的固体核心足够强，足以支撑其自身重量。