But it is worth remembering that this is much more difficult than creating normal displays.
但我们还是值得记住一点，这种显示器的制造要比普通显示器困难得多。
But, because they interact only very weakly with normal matter, detecting them is difficult.
但是，因为他们对平常物质只有非常微弱的影响，对之进行观测十分困难。
If you find it difficult to simplify the "normal" way, give it a try.
如果你发现简化那些平时的习惯很困难，试着尝试一下。
And you thought normal dog training was difficult.
和你想过正常的警犬训练是困难的。
of how difficult it is to be normal.
还有试图成为正常人的艰难。
People often feel isolated when normal daily activities become difficult.
当普通的日常活动都变得困难的时候，人们经常会感到孤独。
The way of depreciation based on history cost enables enterprises difficult to maintain normal production.
以历史成本为基础计提折旧的方法，使企业维持生产增加了难度。
In my country, just striving for a normal life is difficult.
在这个国家，人们即使只想过正常的生活也无比艰难。
It is very difficult to attain the decent control result to use normal PID control.
用常规的PID控制很难达到令人满意的控制效果。
Quitting smoking under normal circumstances is one of the most difficult things you can do.
戒烟在正常情况下是最困难的事情你可以做。
In fact it was difficult to understand how we were on pole, and in the race we saw the normal picture.
实际上，很难理解我们是如何拿到杆位的，在比赛中我们看到了正常的画面。
Teaching Quality of college pedagogy has been a difficult point for years in normal colleges.
公共教育学的教学质量问题多年来一直是高师教学改革中的一个难点。
Under normal conditions most people find it very difficult to kill.
在正常情况下，大多数人很难去杀人。
However, various complex tactics are difficult not only in normal exercise but also in matches.
而复杂、变化多样的战术，无论在平时的训练还是在比赛中使用起来都有一定难度。
However, various complex tactics are difficult not only in normal exercise but also in matches.
而复杂、变化多样的战术，无论在平时的训练还是在比赛中使用起来都有一定难度。
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