取而代之一种叫做“核酸外切酶”的酶类被附着在AHL的顶部，它从DNA链上劈开各个碱基对，然后把它们填进孔道内，以供一个一个地识别。

Instead an enzyme, called an exonuclease, is attached to the top of the AHL. It cleaves individual base pairs from the DNA strand and feeds them through the pore to be detected one at a time.

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就牛津大学的纳米孔技术而言，DNA分子依靠第二种蛋白质以一次一个碱基的速度通过小孔。这个蛋白质是一种被称为核酸外切酶的酶。

In the case of Oxford Nanopore's technology, the DNA molecule is fed through the hole one base at a time by a second protein, an enzyme called an exonuclease.

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这会比核酸外切酶测序法快得多。

This would be faster than exonuclease sequencing.

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