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单语范例（未经PONS编辑处理）
His wide-ranging creative activities explore perpetual theme of seeing.
en.wikipedia.org The pump can continually monitor the left ventricle, which allows for perpetual observation the hearts condition.
en.wikipedia.org Human designs should, like the living world, derive their creative forces from perpetual solar income.
en.wikipedia.org In order for this perpetual motion to work, the system must not radiate its rotational energy.
en.wikipedia.org Here there was no peace, no truce, no laws of war, only perpetual and mutual conflict.
en.wikipedia.org