它的音高越接近第一个音高，对海豚来说就越难辨别出它是低音。
The closer it came in pitch to the first one, the hard it became for the dolphin to correctly identify it as low.
这两个品种很难辨别。
虽然很难辨别哪些包裹里装的是社会保障支票等重要物品，但美国邮政（USPS）和联合包裹服务公司（UPS）会尽其所能优先处理敏感材料。
It can be hard to identify which parcels are carrying crucial items such as Social Security checks, but USPS and UPS try their best to prioritize sensitive material.
真相扑朔迷离，很难辨别。
一些人很难辨别正确与谬误。
Some people find it difficult to distinguish right from wrong.
这不是特别难辨别的原因。
他的笔迹很难辨别。
我的妻子有一段时期很难辨别我哪只耳能听见声音。
My wife has a hard time knowing which ear I can hear out of.
小报上刊登的大多数消息也是假的，但是你很难辨别真伪。
So are most of the tabloid stories, but it's hard to know which ones.
在实地测试中，是很难辨别来自周围环境的其他碎粒的影响。
In fi eld tests, it is difficult to distinguish these particles from others in the surrounding environment.
大海只是另一个天空，哪里是陆地，哪里是天空，肉眼很难辨别出来。
The sea is but another sky, The sky a sea AS well, And which is earth and which is heaven, The eye can scarcely tell.
FDA表示死亡是因服用达尔丰还是因为事实上的药物过量所致很难辨别。
The FDA said it was difficult to show that deaths associated with Darvon use were not, in fact, overdoses.
最难辨别的事情是你的商品代表了新的市场还是一个被重新分割的现存市场。
The toughest distinction to make is whether your product represents a new market, or is re-segmenting an existing market.
Taylor先生指出另外13次危机对更广泛的经济范围所造成的影响很难辨别。
Mr Taylor notes that the other 13 had little discernible effect on the wider economy.
摩洛哥马拉柯什地区麦地那市街区的特点是错综复杂，宛如迷宫一样，从高空很难辨别。
The medina quarter in Marrakech, Morocco is characterised by its winding, maze-like streets, though is hard to identify from the air.
在NBA里对身体的需求以及球场上的娱乐性，似乎在狂妄自大和蹒跚而行之间很难辨别清楚。
On the physically demanding and entertainment intensive court-scape of the NBA, it's often impossible to distinguish between swagger and stagger.
但是，涂料市场上的大部分标有环保标志的产品却并不可信，许多标志都是伪造的，消费者很难辨别。
However, most of the market marked with paint environmental protection logo products are not credible, many of the markers are forged, consumer discerns very hard.
我们继续说，我们刚刚讨论了数字新闻的一个缺点，那就是网络上存在的大量信息，我们很难辨别真假新闻。
But moving on now, we've discussed one disadvantage of digital news – that it can be hard to distinguish a real story from a fake one – given the mass of information available on the web.
但是，其他人认为互联网是一个虚拟的世界，不可能存在真正长久的爱情，因为通过网络我们很难辨别真假。
However, others hold that the Internet is a virtual world, in which real and enduring love can possibly exist since it is very difficult to tell the real from the fake through the Internet.
当他给这些人读故事的时候，他们也很难辨别出故事中人们的感情，并且很难说出怎样做能让故事中的人们感觉好点。
When he read stories to the multitaskers, they had difficulty identifying the emotions of the people in the stories, and saying what they would do to make the person feel better.
不幸的是，那些劣质或不纯的蜂蜜表面上和纯正的区别不大，当你在货架上看到时，你很难辨别出究竟哪一个是纯正的，哪一个不是。
The problem with this is, unfortunately, fake and impure honey can be passed off as pure very easily. When viewed on the shelf, it is very hard to pick out what is pure, and what is not.
除了她淡淡的英国口音之外，人们很难辨别出她究竟从哪里来。 许多通常没有能力推举出乐坛国际巨星的人群乐意视她为自己的代表。
With nothing to go on but her light English accent, it was difficult to tell where she was from, making her a candidate to represent populations who usually didn’t get their own global pop stars.
“孕妇没有显怀时，人们很难辨别她是否怀孕，因此也难以决定是否应该让座，”一名经常乘坐地铁的23岁大学生LeeGyeong - eon说道。
"It is hard to tell if a woman is pregnant, and give up a seat, when she doesn't have a baby bump," said Lee Gyeong-eon, a 23-year-old college student who frequently travels by subway.
然而，如果这些影像刚开始的时候很难辨认出来，即使简短的呈现影像之后再呈现纹理图案，他们通常也是无法辨别的。
However, if these pictures are not only flashed very briefly but are also hard to make out to begin with and have a grainy pattern displayed right after them, they often cannot be seen.
然而，如果这些影像刚开始的时候很难辨认出来，即使简短的呈现影像之后再呈现纹理图案，他们通常也是无法辨别的。
However, if these pictures are not only flashed very briefly but are also hard to make out to begin with and have a grainy pattern displayed right after them, they often cannot be seen.
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