However, there is only a moderate correlation between the hydrogen ion concentration of a food and its perceived sourness due to the penetration of non-dissociated acids inside the taste cells.

然而，因为未分离酸渗透到味觉细胞中，饲料的氢离子浓度和它的酸味感觉之间仅仅有一个中度相关性。

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Known technically as "oxygen therapeutics," they aim to replace only oxygen-bearing red cells rather than whole blood with its additional plasma, platelets and infection-fighting white cells.

在技术上被称为“氧气疗法”，它们旨在替代的只是担负运送氧气的红细胞，并非血液的全部包括其他成分如血浆、血小板和抗感染的白细胞。

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Because Alzheimer's disease kills cells and its pathology is irreversible, early detection is the only hope for a cure or prevention.

因为阿尔茨海默病杀死细胞，且病理过程不可逆转，因此早期探测是治疗和预防此病的唯一希望。

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Because HIV is an RNA virus and if it enters your cell the only way it can replicate, it can put its DNA into your cells, is by first making DNA out of its RNA genome.

因为HIV是RNA病毒,如果它进入你的细胞,它复制自己的唯一方式,它能把自己的DNA转入你的细胞,方法是先用自己的,RNA基因组制造出DNA

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Its flexible durability aside, the cells currently operate at only one percent efficiency -- so you might want to buy those drapes in bulk to see a real bottom line kickback.

ENGADGET: MIT researchers revolutionize solar cell printing, fold the power of the sun into your everyday home (video)