单词：exonuclease
exonuclease的用法和样例：
例句
- Exonuclease is any of a group of enzymes that catalyze the hydrolysis of single nucleotides from the end of a DNA or RNA chain.核酸外切酶是从脱氧核糖核酸链或核糖核酸链的末端催化单核苷酸水解的一种酶。
单词：exonuclease 相关文章
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VOA2004（下）--时事新闻
今天学的词是ease。Ease就是放松原有的规定或限制。上个月，美国航空安全官员决定禁止旅客带液体上飞机。经过研究，他们现在决定放宽这一规定。报纸说：U.S. Eases Carry-on Liquid Ban, 美国当局
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