Our concern is with movement between nations, not with internal migration within nations, although such movements often exceed international movements in volume.
我们关注的是国家之间的流动，而不是国家内部的流动，尽管国内流动的数量经常超过国际流动。
The problem is that although such enzymes exist, they are expensive.
但问题在于这样的混合酶尽管存在，成本却太高。
Interruptions to large areas remain a possibility, although such occurrences may be very infrequent.
大范围的停电也是可能的，尽管很少会发生此种情况。
However, although such statistics may be superficially appealing, this could easily be a random effect.
然而，这些统计数据在表面上看来可能引人入胜，但是它可能仅仅是随机的效应。
In fact, although such sports management is beneficial to the promotion of the athletic sports level, its drawback is obvious, too.
实际上，这样的体育经营虽然有利于促进竞技体育水平的提高，但是其弊端也是十分明显的。
Lawmakers now have 15 days to block the sale although such action is unlikely given close ties between the United States and the UK.
目前，国会有15天否决时间，但因英美关系亲密，此举不太可能出现。
Although such a case is rare, it is by no means unique.
这种情况很罕见，但并非绝无仅有。
Although such reconstruction will boost Japanese GDP, it comes at a cost.
尽管这样的重建会增加日本GDP，但也要付出代价。
Although such information leaks out, it does so selectively and unevenly.
虽然这些信息会泄露出来，但通常是有选择性和倾向性的。
Although such a rule might appear to avoid contradictory signals it is not foolproof.
尽管这样的规则能避免产生一些相互矛盾的信号，但不能完全避免。
Although such an activity entails results, it is not performed in order to achieve them.
尽管此类活动带来了一些结果，但是它的实施并不是为了获得这些结果。
Although such abstractions are not desired all the time, it is appropriate for many cases.
尽管此类抽象并不是一直需要，但它适合于许多情形。
Although such questions seemed to have nothing to do with the case, some clews could be found in them.
尽管这些问题看似和案子无关，但却可以从中发现一些线索。
Although such risks should not be ignored, first cousin marriage is not necessarily a recipe for genetic disaster.
虽然这样的风险不容忽视，但是堂兄弟姊妹结婚并非注定基因灾难。
Although such a derived inductive conclusion cannot be proved, its reliability is supported by empirical observations.
虽然归纳出来的结论没办法被证明，但是它的可靠性是依靠实践经验观察出来的。
Although such languages can perform at a higher level, the generated code can be executed on only a limited number of systems.
尽管这些语言可以提供更高的性能，但是生成的代码只能在有限的几种系统上执行。
Although such temperatures might be considered pleasant for a picnic or a hiking trip, this is the Antarctica we are talking about.
虽然这样的温度可能适合野餐或徒步旅行，但我们谈论的是南极洲。
Although such art can not ensure the correctness of the outcome of decisions completely, it improves the correctness rates of the decisions.
这种艺术虽然并不能完全保证判决结论的正确性，但可以提高判决的正确率。
Although such evidence is mounting, it does not yet support the general treatment of asymptomatic hyperuricemia to reduce cardiovascular risk.
虽然有关尿酸是心血管危险因素的证据正逐渐增多，但尚不支持常规对无症状高尿酸血症进行治疗以降低心血管风险。
Although such tumours are often resolved naturally, they may reoccur and cause deformity, and can be life-threatening if they obstruct the airways.
虽然这类肿瘤往往会自然消除，但它们会再生，引起畸形，如果堵塞了呼吸道，甚至会危及生命。
Although such ventures are often exciting and profitable, the new entrepreneur should thoroughly investigate and plan the situation before plunging in.
虽说这些事业令人激动，富于回报，但刚入门的企业家还是应该在投身商海之前进行全面的调查和筹划。
Although such filters have proven to be effective in containing a range of toxic gases, they are not adequately effective against all potential threats.
虽然这种过滤装置对吸收有害性气体是有效的，但是他们无法有效吸收所有的有害性气体。
Although such dynamic balance is often broken, it then spontaneously pursues new balance. Otherwise, such relations of production cannot come into being.
虽然这种动态平衡常常会被打破，但随后又会自发地追求新的平衡，否则，这种生产关系就不可能产生。
Although such hypothetical chondrules should have been preserved, researchers have not yet found any. to be fair, though, scientists have only just begun to look.
这种假设性的球粒应该能保存下来，但是研究人员至今仍尚未寻获(不过，公平说来，科学家也才刚开始寻找而已)。
Although such studies cannot prove that real black holes radiate and evaporate, they lend strong support to the ideas that went into Dr Hawking's line of reasoning.
尽管这些研究无法证明真正的黑洞的辐射与蒸发行为，他们却为霍金博士的论证提供了有力的支持。
Although such studies cannot prove that real black holes radiate and evaporate, they lend strong support to the ideas that went into Dr Hawking's line of reasoning.
尽管这些研究无法证明真正的黑洞的辐射与蒸发行为，他们却为霍金博士的论证提供了有力的支持。
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