这是一台高度精密的设备,必须小心操作。

This is a highly sensitive piece of equipment that must be handled with care.

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This is a highly sensitive piece of equipment that must be handled with care.

highly 是副词,由形容词 high(高的)加上后缀 -ly 构成,表示"高度地、非常地",用来修饰形容词 sensitive,强调其程度。

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