However, although eyestrain may cause some pain or headaches, it does not permanently damage eyesight.
然而，尽管眼疲劳可能会引起一些部位的疼痛或头痛，但它不会永久性地损害视力。
However, the object does not come from a rocket or missile.
然而，该物体并非来自火箭或导弹。
However, if you go to see lions, tigers or foxes during the daytime, they'll probably be asleep.
然而，如果你在白天去看狮子、老虎或狐狸，它们很可能正在睡觉。
In this chocolate melting recipe, I use a little pure vanilla extract to enhance the icing. However, you could also use peppermint or coffee.
在巧克力融化配方里，我使用小纯香草精来增强糖衣的糖度，但是，您也可以使用薄荷或咖啡。
However, some nutritionists advise against switching to a totally strict vegetarian, or vegan diet.
然而，一些营养学家建议不要改用完全严格的素食或纯素饮食。
However, these disorders often remain throughout life due to neglect or absence of specific kind of treatment.
然而，由于忽视或缺乏特定的治疗，这些疾病往往会伴随一生。
However, many of these planets are either too near to the star or too far away.
然而，这些行星中有许多都离恒星太近或太远。
However, most young netizens consider this emoji as "Laugh to tears" or simply "LOL", which means "Laugh out loud".
然而，大多数年轻网民认为这个表情符号是“笑到流泪”或只是“LOL”，意思是“大笑”。
However, the doctors warned that people who have stomach bleeding or other bad reactions from aspirin should not take it after heart surgery.
然而，医生警告说，有胃出血或其他阿司匹林不良反应的人不应该在心脏手术后服用阿司匹林。
However good your monitor is, whether it is low-radiant or LCD, you will definitely feel light-headed after a day of web-surfing.
不管你的显示器有多好，不管是低辐射的还是LCD 的，在浏览了一天的网页后，你肯定会感到头晕。
However, since the Cup began, all of the winning teams have been from Europe or South America.
然而，自从有世界杯以来，所有获胜的球队都来自欧洲或南美洲。
However, similar changes occurred when the subjects were asked simply to open their mouths or to breathe deeply.
然而，受试者仅仅被要求张嘴或深呼吸时，也有类似的变化发生。
However, the ejecta on Mars gives the distinct impression of a liquid that has splashed or flowed out of crater.
然而，火星上的喷出物则由于那些溅出或溢出陨石坑的液体而令人印象深刻。
Hunting is usually not allowed in cities or suburbs, however.
然而，狩猎通常是不允许在城市或城郊进行的。
In the United States, however, bowing or any type of submissive body posture is particularly irritating, for it tends to connote undue formality, aristocracy, and a nonverbal denial of egalitarianism.
然而，在美国，鞠躬或任何形式的顺从的身体姿势都特别令人恼火，因为它往往意味着不适当的礼节、贵族作风和对平等主义的非语言否认。
The opposite was true in some countries with generous or ill-designed welfare states, however.
然而，在一些福利制度慷慨或设计不当的国家，情况恰恰相反。
It's likely, however, that there's something in your presentation that's unclear or confusing.
然而，很可能你的演讲中有些东西是不清楚或令人困惑的。
Great Britain had large amounts of coal; however, there were not yet efficient means by which to produce mechanical energy or to power machinery.
英国有大量的煤；然而，当时还没有有效的方法来产生机械能或为机器提供动力。
On half of the trials, however, these were samples of the non-chosen jam or tea.
然而，在一半的试验中，这些是未被选择的果酱或茶的样本。
However, genetic learning depends upon a prediction that the future will more or less resemble the past.
然而，基因学习基于一种预测，即未来或多或少会与过去相似。
However, it should be kept in mind that many societies that knew of agriculture more or less consciously avoided it.
然而应该记住的是，许多对农业有所了解的社会都或多或少有意识地避免了它。
If the employees were already aware of their deficiencies before the evaluation period, however, they may be unable or unwilling to correct them.
然而，如果员工在评估期之前就已经意识到自己的不足，他们可能无法或不愿纠正这些不足。
Wait 30 to 60 minutes or however long it takes.
等30到60分钟，或需要的不管多长的时间。
More generally, however, whether or not a composition establishes a new principle in the history of music has little bearing on its aesthetic worth.
然而，更笼统地说，一首曲子是否在音乐史上确立了一个新的原则，与它的审美价值关系不大。
This doesn't, however, make interpretation merely relative or even pointless.
然而，这并不意味着解释只是相对的，甚至是毫无意义的。
The host or hostess of the party will, however, probably give all the guests a tour of their new home.
不过，聚会的主人可能会带所有的客人参观他们的新家。
Nearly every movie theater, however modest, had a piano or organ to provide musical accompaniment to silent pictures.
几乎每家电影院都有钢琴或风琴为无声电影伴奏，无论这些电影院多么简陋。
However, if you are in your thirties, forties, fifties, or older, such health-related thoughts are likely to become increasingly important to you.
然而，如果你到了30多岁、40多岁、50多岁、甚至更老的时候，这些与健康相关的想法可能会对你越来越重要。
However, none of them were prepared to comment on this study or discuss the detailed nicotine content of their products.
然而，他们都不愿意对这项研究发表评论，也不愿意讨论他们产品中尼古丁的具体含量。
He had to attain fun by drinking wine and writing poems. However, maybe we have to thank his miserable political life, or we will lose a great fortune in poetry.
他必须饮酒作诗聊以自娱。然而，也许不得不感谢他悲惨的政治生涯，否则我们将会失去一笔诗歌上的巨大财富。
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