Witnesses said that two people were killed, but those accounts could not be confirmed.
目击者说两人遇害，但那些说法都没法得到证实。
I could not distinguish her words, but she sounded agitated.
我听不清她说的话，但听得出她很紧张不安。
It should have been an occasion for rejoicing, but she could not feel any real joy.
原本应该是高兴的时刻，她却丝毫未感到快乐。
I emptied out my pockets but could not find my keys.
我把口袋里的东西都掏了出来，仍然找不到我的钥匙。
The bureau could easily present their data in more useful ways, but they have chosen not to.
这一部门能够以更有用的方式轻易地提供他们的数据，但他们选择不这样做。
"Not at first, perhaps," said the Hatter, "but you could keep it to half-past one as long as you liked."
“也许一开始没有，”帽商说，“不过你想要多久就可以把时间保持到一点半。”
Under the first law, a robot could not harm a dangerous gunman, but under the zeroth law, a robot could kill the gunman to save others.
根据第一定律，机器人不能伤害带来危险的枪手，但根据第零定律，机器人可以杀死枪手以拯救他人。
Mike was next to me in his space suit but he could not take over my role.
迈克穿着宇航服坐在我旁边，但他不能取代我的角色。
As they got to like me, they wanted to take me along, but I could not leave.
当他们开始喜欢我时，他们想带我一起去，但我不能离开。
She was very handsome, but so proud and vain that she could not endure that anyone should surpass her in beauty.
她非常好看，但是她如此的骄傲和自负，不能忍受任何人超过她的美丽。
Boats could carry heavy weights, but canals could not cross hilly terrain; turnpikes could cross the hills, but the roadbeds could not stand up under great weights.
船可以运载重物，但运河不能穿越丘陵地带；高速公路可以翻山越岭，但路基承受不了巨大的重量。
A slow response to a message could hurt not only your reputation but also your livelihood.
回复信息太慢不仅会损害名声，还影响生计。
I could go on with additional examples, but let's not miss the main point here.
我可以再举一些例子，但为了不错过这里的要点，就不再多说了。
I, too, have resisted the idea that food shortages could bring down not only individual governments but also our global civilization.
我也抵制这样一种观点，即粮食短缺不仅会拖垮个别国家的政府，还会波及全球文明的发展。
All this looked charming, but the old lady could not see well, and so had no pleasure in them.
这一切看上去都很迷人，但是老太太的眼睛看不清楚，所以对它们不感兴趣。
Yet I, too, have resisted the idea that food shortages could bring down not only individual governments but also our global civilization.
然而，我也反对这样一种观点，即粮食短缺不仅会拖垮个别国家的政府，还会波及全球文明的发展。
Jerry did not regret giving the comment but felt that he could have expressed it differently.
杰瑞并不后悔发表了这番评论，但他觉得他本可以用不同的方式来表达。
He could drink and swear, now—but found to his surprise that he did not want to.
现在他可以喝酒，可以咒骂了——但令他吃惊的是，他发现自己并不想这么做。
I wish I could say I had reservations about Madoff before "the Call”, but I did not.
我希望我可以说，在“电话会议”之前我对马多夫有所保留，但我没有。
Meanwhile, the deadliest strains of the virus perished with their hosts as natural selection favored strains that could infect hosts but not kill them.
同时，由于自然选择更倾向于选择那些能够感染宿主但不致其死亡的病毒，这种致命病毒便随着宿主的死亡而消失。
Opening the door, she found herself in the street, but she could not see the tower any more.
她打开门，走在街上，但她发现再也看不见塔了。
Charles Lyell made a good estimate of the Tertiary Period from the fossil record, but his method could not be extended to earlier geological periods.
查尔斯·莱尔根据化石记录对第三纪作出了很好的估计，但他的方法不能扩展到更早的地质时期。
Here the dreams were rushing past, but they hastened by so quickly that Gerda could not see the high personages.
梦在这儿，从他们身边跑过去了，但是它们跑得非常快，格尔达来不及看那些高贵的人物。
At the time, people were wild for travel and for experiencing new places; but not everyone could afford it.
当时，人们热衷于旅行和体验新地方；但并不是每个人都支付得起这些费用。
A slow response to a message could hurt not only your reputation, but also your livelihood.
回应信息迟钝不仅会损害你的声誉，还会影响你的生计。
A "town of culture" could be not just about the arts but about honouring a town's peculiarities—helping sustain its high street, supporting local facilities and above all celebrating its people.
一个“文化之城”并不只是关乎艺术，同时还要尊重城市的特色——维护其商业街，支持当地的设施建设，最重要的是，颂扬当地人民。
The robber took a light and began looking for it, but he could not find it.
强盗拿了一盏灯，开始找，但是找不到。
I tried to jump up, but I could not stir a limb, then I yelled aloud in a frenzy of fright.
我试图跳起来，可是我四肢动弹不得，然后我在惊骇中大声喊叫起来。
Many Americans came to believe that scientific certainty could not only solve scientific problems, but also reform politics, government, and business.
许多美国人开始相信科学的确定性不仅能解决科学问题，而且能改革政治、政府和商业。
The soldier consented, and next day laboured with all his strength, but could not finish it by the evening.
士兵答应了。第二天，他竭尽全力地干了起来，但到晚上还没干完。
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