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Parents of children killed in Sichuan when their shoddily built schools collapsed in the earthquake have been denouncing local officialdom, which has responded by trying to silence them.

四川地震中那些豆腐渣工程学校发生垮塌，遇难孩子们的父母一直在谴责地方的官僚，官僚们的反应是让这些家长闭嘴。

When a sinusoidally modulated light spot was presented at their receptive field center,the on-center and off-center cells responded half a cycle (=180°) out of phase with one another at all intensities tested.

当正弦调制的光点投射在它们的感受野中心时，在不同的刺激强度下，给光中心细胞和撤光中心细胞的反应相位彼此相差半个周期(180°)。

Yale ecologist David Skelly and colleagues studied how wood frogs in northeast Connecticut have responded to over 30 years of local climate change.

耶鲁的生态学家David Skelly 和他的同事们研究美国康涅狄格州东北的木蛙对过去30年间当地气候改变的反应。

Helen, the spokesman of Universal Animal Protection Association at Taiwan, said sobbingly that she was a Taiwanese's wife and when she described Taiwan for foreigner friends of her, they always responded "That was a place of dog-eating".

国际保护动物协会在台发言人海伦在会谈中激动哽咽的表示：她嫁给台湾人，当她向外人提及台湾，对方总会说：「那是一个吃狗肉的地方。

The only trouble had been that it had not responded to shamanistic spellwork no matter how great the effort put in by the chieftain.

问题是，这件神器抵抗一切萨满魔法，即使老萨满自己也无能为力。

The company has responded to the global recession with the introduction of a number of cost-optimized designs, including its Duo Pico and Victory Spex ranges.

该公司已经回应了全球经济衰退，推出了一系列成本优化设计，包括其双皮和胜利SPEX仪范围。

In the pond the sponsor responded to the correspondent s corresponding re sponsibility.

在池塘里主办者对通讯员的相应责任作出了回应。

A lot of doubt that generates from this, phonic collect assist symphonious assist card pulls staff member of center of OK copyright operation to also say at was being responded to recently, the cent recipe case that copyright expends still needs to talk things over at present.

由此产生的诸多质疑，音集协和音著协的卡拉OK版权运营中心工作人员也于近日回应说，版权费的分配方案目前仍需协商。

The representative of China responded that China would become an observer to the GPA upon accession to the WTO Agreement and initiate negotiations for membership in the GPA by tabling an Appendix 1 offer as soon as possible.

中国代表答复表示，中国将自加入时起成为GPA观察员，并将尽快通过提交附录1出价，开始加入该协定的谈判。

Reactive oxygen species causing DNA oxidative damage comes from two kinds of ways:one is from cellular normal physiological metabolism;the other is from outer environment.Redox-sensitive green fluorescent protein was expressed in Saccharomyces cerevisiae.Recombinant cells were evaluated in monitoring the changes in the redox state of living cells when challenged with toxicologically relevant metal ions NaAsO_2 or Pb(NO_3)_2 by measuring emission intensity at 510 nm with a Hitachi F6500 fluorescence spectrophotometer,roGFP expressed in yeast responded not only to typical membrane-permeant oxidants H_2O_2 and reductants DTT,but also to toxicological metal ion-induced intracellular redox changes in a dose-dependent manner.Moreover,exposure of yeast cells to NaAsO_2 or Pb(NO_3)_2 at concentrations that induced redox changes reported by roGFP caused up to 2～3 fold increases in DNA mutation frequency.This mutagenic effect was largely caused by oxidative stress since blocking the production of hydryl radicals with thiourea significantly reduced the mutation rate as well as delayed the cell death.

本文将对氧化还原状态变化敏感的绿色荧光蛋白roGFP1-R12，在酵母细胞中实现了多拷贝强表达；荧光扫描经强氧化剂H_2O_2和还原剂DTT以及环境中重金属NaAsO_2或Pb(NO_3)_2处理后的酵母细胞悬液，测定510 nm处的荧光发射强度结果显示，表达的绿色荧光蛋白对氧化还原水平敏感，且在510 nm处的荧光强度与一定的重金属浓度呈正相关，即roGFP1-R12在510nm处的荧光发射值随重金属浓度的增高而增强，从而说明重金属对细胞的毒性在一定程度上很可能是通过破坏细胞内的氧化还原平衡发生作用；同时通过该绿色荧光蛋白对胞内氧化还原状态变化的响应情况可以来实时检测环境中的重金属；遗传学的点突变频率及致死率实验数据表明，重金属能导致菌体的点突变频率和致死率升高，且活性氧的清除剂巯基脲能明显降低这种点突变和致死率，说明由重金属引发的这种点突变和致死效应在很大程度上是依赖于重金属对细胞诱导产生的氧化胁迫。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。