Coefficient of performance(cop)

coefficient [,koɪ'fɪʃnt]

n. 系数;（测定某种质量或变化过程的）率;程度;协同因素; adj. 共同作用的;合作的;

co共同+ef出+fici做+ent...的 → co共同+efficient做出来=有效的 → 一起有效的 → 系数

of [əv]

prep. 关于;属于…的;由…制成; aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];

With a shortage of chromosomes, a developing fetus will likely grow into a child with down syndrome.

如果缺省染色体，一个处于成长阶段的胚胎可能发育成一个具有不良综合症的小孩。

Mrs. Hughs, this is Peter Brown.

休斯太太，这是彼得i布郎。

I'm afraid I can't agree with you. That's a good way of giving information, but it's not a good way of persuading people. For one thing, it's boring, and people aren't going to read an ad that looks boring. For another thing, one computer looks very like

恐怕我不能同意你的意见。那是个通报信息的好办法，但并非是使人信服的好办法。一是它很乏味，人们是不会去读一则看起来很乏味的广告的。其次，计算机彼此都很相像。人们不会记住产品的名字的。