Some of them, though, say they simply cannot.
他们中的一些人却说不能。
The ultimate answer to the puzzles raised by closed timelike curves is probably that they simply cannot exist.
由封闭的时间型曲线引起的这些困惑，它们的最终答案也许是这些曲线不可能存在。
Not to have the foreign exchange to buy a new bearing for a steam turbine, or oil, or fertilizer, when the need arises is a risk they simply cannot afford.
一旦需要购买汽轮机上用的新轴承，或者石油，或者化肥，而拿不出外汇来，那简直是这些国家担当不起的一种风险。
For example, many organizations suffer greatly from the status quo — they are so Mired in the tasks of their daily existence that they simply cannot focus on the future.
例如，许多组织都极大地受到现状的限制——他们被日常事务所困扰，无法关注未来。
But the main problem with bilateral and regional deals is that they simply cannot deal with the issue of removing agricultural subsidies.
但双边协议和区域协议的主要问题是，它们完全无法处理取消农业补贴的问题。
Up to 75% of China's population still resides in rural farming regions, and they simply cannot afford high or even mid-priced cigarettes.
中国75%的人口仍然生活在乡村地区，他们买不起昂贵、甚至是中等价位的香烟。
They simply cannot contain themselves for joy.
他们简直无法抑制内心的喜悦。
They simply cannot afford to worry about the future.
他们实在无力顾及将来。
They simply cannot use their money wisely, because any use of money feels dangerous.
他们无法明智地使用金钱，因为动用任何一笔钱都会让他们感觉危机重重。
They simply cannot recall any positive experience that would generate these types of feelings.
他们仅仅就是无法回忆起任何能够产生这类情感的正面经历。
They simply cannot recall any positive experience that would generate these types of feelings.
他们仅仅就是无法回忆起任何能够产生这类情感的正面经历。
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