GMAT官方指南难句：The complexity of these relationships makes it unlikely that a system of import relief laws will meet the strategic needs of all the units under the same parent company.
这些关系的复杂性使得进口救济法体系不能满足相同母公司下所有子公司的的战略需求。
GMAT官方指南难句：Our first studies sought to determine whether the increase in serotonin observed in rats given a large injection of the amino acid tryptophan might also occur after rats ate meals that change tryptophan levels in the blood.
在我们的第一个研究中，我们给老鼠注射了大剂量的aat物质后，发现它的s物质含量上升了。我们想确定如果给老鼠吃那些能够改变其血液中的t物质含量的食物，同样的现象是否会出现。
GMAT官方指南难句：The more protein in the meal, the lower is the ratio of the resulting blood-tryptophan concentration to the concentration of competing amino acids, and the more slowly is tryptophan provided to the brain. Thus the more protein in a meal, the less serotonin subsequently produced and released.
食物中的P越多，血液中t的浓度和aa的浓度比越低，t被供给大脑的速度也就越慢。所以，食物中的P越多，S的产生和释放的就越少。
GMAT官方指南难句：The explanation they consider most plausible is behavioral differences between extinct and present-day carnivores—in particular, more contact between the teeth of predators and the bones of prey due to more thorough consumption of carcasses by the extinct species.
他们认为最合理的解释就是灭绝的食肉动物和现今的食肉动物之间的行为差异，即捕食者的牙齿和猎物骨头之间的接触，因为捕食者要将猎物吃的很干净。
GMAT官方指南难句：In addition, the human capital theory explains why there was a high concentration of women workers in certain low-skill jobs, such as weaving, but not in others, such as combing or carding, by positing that because of their primary responsibility in child rearing women took occupations that could be carried out in the home.
另外， 人力资源理论认为女人的主要职责是照顾孩子，所以她们选择可以带回家工作的职业，这样这个理论可以解释为什么很多女性从事一些低技能的职业，例如编织而不是coming和carding。
GMAT官方指南难句：Some observers have attributed the dramatic growth in temporary employment that occurred in the United States during the 1980's to increased participation in the workforce by certain groups, such as first-time or reentering workers, who supposedly prefer such arrangements.
一些观察者把80年代美国临时工作的大幅增长归因于某些特殊人群参与的增长，例如首次就业的人或是再就业的人，这些人或许都喜欢临时工。
GMAT官方指南难句：Given the analyses, which reveal that growth in temporary employment now far exceeds the level explainable by recent workforce entry rates of groups said to prefer temporary jobs, firms should be discouraged from creating excessive numbers of temporary positions.
这些分析显示临时工岗位的增长量大大超过了那些喜欢做临时工的人，因此公司不应该再创造过多临时工岗位。
GMAT官方指南难句：Although this approach was preferable to victimizing other geographical areas by taking their jobs, it also had its shortcomings: high-tech manufacturing firms employ only a specially trained fraction of the manufacturing workforce.
虽然这个方法比夺取其他地区的工作岗位，进而伤害其他地区好，但是也有缺点：高科技制造公司只雇佣很小部分经过特殊训练的制造业工人。
GMAT官方指南难句：If the expansion of the universe is to stop, there must be enough invisible matter in the universe to exceed the luminous matter in density by a factor of roughly 70.
要使宇宙停止扩张，必须要有足够的不可见物质，远远超过发光物质，其密度大约是70倍。
GMAT官方指南难句：Instead we have found that the rotational velocity in spiral galaxies either remains constant with increasing distance from the center or increases slightly. This unexpected result indicates that the falloff in luminous mass with distance from the center is balanced by an increase in nonluminous mass.
然而我们发现在螺旋星系里，随着远离距核心，环绕速度要么是不变的要么只有很小很小地增加。这个意外的结果表明随着远离核心，发光物质逐渐减少，不发光物质逐步增加，最终两者达到了平衡。
