形容词
中文翻译：Unknown
同义词：
['invisible', 'imperceptible', 'indefinable']
例句：
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1. The impalpable nature of the problem made it difficult to solve.
这个问题的不可穿透性质使得解决起来很困难。
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2. The impalpable truth behind the facade was a shocking revelation.
表面之下隐藏的不可穿透真相令人震惊。
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3. The impalpable connection between the two cultures is what makes their interactions so fascinating.
两种文化之间难以捉摸的联系是它们互动如此引人入胜的原因。