The gills constitutes of gill arch, gill raker, gill filament, branch leaf.

Histopathological lesions are mainly hyperplasia and hypertrophy of the gill epithelium.

组织病理损伤主要是鱼鳃上皮细胞的增生和肥大。

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Copper Speciation in the Gill Microenvironment of Cyprinus carpio

铜在鲤鱼（Cyprinus Carpio）鱼鳃微环境中的形态分布

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Accumulation of copper is decreased in the gill with Pb or metal mixture of Pb& Cd.

Pb、Cu和Cd的混合物能够减少Cu在鱼鳃中的积累。

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Antioxidative Activity of Green Tea Extracts by using the Fish-Gill Lipoxygenase as the Model

绿茶萃取液的抗氧化性&以鱼鳃脂氧合酶为模式的探讨

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Methods Meat, gills and scales samples were collected from the freshwater fishes, digested by artificial stomach liquid and examined for the encysted metacercaria of Clonorchis sinensis under microscope.

方法取淡水鱼肉、鱼鳃及鱼鳞，采用人工胃液消化法，镜下检查华支睾吸虫囊蚴。

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Fractionation of Pyrene on Fish Gill Surface

用连续提取法研究芘在鱼鳃表面的结合形态

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She never failed to return my smile, my grasp, and my sin chau greeting.

她也会对我的微笑、握手及问候报以同样的微笑、握手及问候。

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Will be built in rather large scale since 2007, so the times of supply the basic varieties of these products depending on import will go never to return.

2007年PAN基碳纤维、对位芳酰胺纤维、连续玄武岩纤维及聚苯硫醚等纤维将开始兴建较大规模生产厂，这些产品的基本品种依赖进口的时代即将过去。

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That is to say, we must never attack others without provocation, but once attacked we must never fail to return the blow.

这就是说，决不可无故进攻人家，也决不可在被人家攻击时不予还击。

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Why is it that some people never remember to return money?

为什么有些人总是会忘了还钱啊？

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Soccer superstar Steve McManaman laps up the millionaire lifestyle on his ￡ 500,000 motor cruiser-after vowing never to return to English football.

发誓永远不会回到英国足坛的足球超级明星史蒂夫·麦克马拉曼开着他价值50万英镑的摩托游艇，过上了百万富翁式的好日子。

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Although life and business have many lessons to teach us, Dr. Cloud observed 10 "doorways" of learning that high performers go through, never to return again.

虽然生活和工作带给我们的教训有很多，但是克劳德教授为我们总结出了成功人士经历并吸取的10个教训。

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Some even thought that with students able to load class materials and textbooks easily on to the 10-ounce device, the era of lugging textbooks around campus might finally be over.

有人甚至以为，当学生能够将课堂资料和课本存放在重约10盎司的电子设备上，在校园里背着沉重的课本奔走的时代或许会一去不返。

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Therefore, each hour of this day will I cherish for it can never return.

因此，我会珍惜今天的每一个小时，因为它将一去不返。

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Come here and record things and person with your own hand, commemorating the memory that's gone for ever.

来把旅途中的各种人和事亲手记录下来吧，纪念某人，纪念某一段一去不返的美好回忆。

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Those were extremely difficult times but those days are now behind them.

那是非常艰难的时间，但是那些日子已经一去不返了。

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But all the occurrence once led of everything all along with time of passage but a don't return.

而所有曾经发生过的一切都随着时间的流逝而一去不返。

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But once passed, it is gone forever.

而时间一旦度过，便永远地一去不返。

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Even if the world can find more oil-in the Arctic or tar sands, say-the longer-term question is whether the era of "cheap energy" is over and how the world can adjust if it is.

即便世界各国能够找到更多石油（比如在北极或焦油砂中），更长远的问题是：“廉价能源时代”是否已一去不返？若是，那各国又能如何应对？

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Careers are not ladders. Those days are long gone

职业并不是梯子那种时代已经一去不返了

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