单词：enzymatic spoilage
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Why Lettuce Should NOT Be Frozen Stroll through the frozen foods section of the supermarket and youll find frozen corn, peas, and beans. A Moment of Science wonders, why isnt there any frozen lettuce? 图片1 Why Cant I Freeze Lettuce? Freezing is a
英语听力文摘 English Digest
What Are Sulfites? Youve just opened a bottle of wine for dinner. On the label, you see these words: Contains Sulfites. What are sulfites? And what are they doing in your wine? 图片1 Chemical Compounds Sulfites are chemical compounds found naturall
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Lesson Fourteen 听力部分 Dictation: Please prepare your paper and pen. We keep ____ in the _________ to ______ its _______ and ___________. ________________ keep _________ and inhibit the _____ of most ______. However, ____ spoilage microorganism
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On the eve of the International AIDS Conference, which begins in Mexico City Sunday, researchers at the University of Texas Medical School at Houston claim to have discovered a way to destroy the HIV virus that causes AIDS. If their hopes are confir
VOA标准英语2008年（八月）
a flat percentage rate of income 统一比率的所得税税率 a long position 多头部位，利多形势 a long position 多头寸；买进的期货合同 a put option on a debt security 债务证券的卖出版权 a sales slip 签购单据，售货
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Better Living through Evolution: Nobel Prize in Chemistry This years prize is harnessing the power of evolution. The Royal Swedish Academy of Sciences has decided to award the 2018 Nobel Prize in Chemistry with one half to Frances H. Arnold for the d
2018年科学美国人10月