All horses are animals, but not all animals are horses.
所有的马都是动物，但并不是所有的动物都是马。
Most of their remarks were kindly made—with tolerance rather than bitterness—and frequently were softened by the fact that the students were speaking about some, not all, instructors.
他们的大多数言论都是善意的，其中带着宽容而不是怨恨，并且经常因为学生谈论的是部分而非所有老师，语气变得更为缓和。
That suggests that catch-up sleep may undo some but not all of the damage that sleep deprivation causes, which is encouraging, given how many adults don't get the hours they need each night.
这表明补觉可以弥补部分但不是全部睡眠缺乏造成的损害，考虑到有很多成年人每晚都没有得到他们所需的睡眠时间，这令人鼓舞。
"But that's not all," Mary went on, almost pale with solemn excitement.
“还不止这样。”玛丽接着说，她的脸色因为兴奋几乎有些发白。
He is living proof that not all engineers are boring.
并非所有工程师都缺乏情趣，他就是活生生的例子。
It's not all hard work—we have guest speakers and discussions about how to protect animals in the area.
并不是所有的工作都很艰苦——我们会请嘉宾演讲和讨论如何保护该地区的动物。
But not all the news was bleak in the folk world in 2009.
但2009年关于民乐界并非一片愁云惨淡。
Moreover, not all cash-strapped parents are bad at raising children.
而且，并不是所有的贫困家长都不善于抚养孩子。
Socrates once asked his students, "Do not all men desire happiness?"
苏格拉底曾经问他的学生：“难道不是所有的人都希望得到幸福吗？”
It honestly took me a while to realize that not all users are just like me!
坦白地说，花了很长时间我才认识到，并不是所有的用户都和我一样！
Remember, all best friends are friends, but not all friends can be best friends.
请记住，所有最好的朋友都是朋友，但并不是所有的朋友都能成为最好的朋友。
They're not all saints, they're not all geniuses, but they do deserve remembering.
她们并不都是圣人，她们也并不都是天才，但她们应该被记住。
But I think it's not all that difficult to build relationships based on trust here.
我觉得在这儿建立信任关系不太困难。
Also, not all hackers are attackers — many hackers write the programs that defend you!
同样，并非所有黑客都是攻击者-许多黑客编写保护您的程序！
People like the pure white pigeons, but not all the pigeons in the world are white.
人们喜欢纯白色的鸽子。但是并不是所有的鸽子都是白色的。
It's because not all insects cause us to shriek and go running for a rolled-up newspaper.
所以，并不是所有昆虫都会惹得我们高声尖叫，满屋乱跑地找张报纸卷起就打。
Idit: Learning to memorize and recite English words in a systematic way is not all bad.
通过记忆和背诵英语单词来学英语从系统化的角度来说并不是一无可取的。
It's not all doom and gloom - the global mood of change offers plenty of opportunities.
前景也并非是完全暗淡的——全球对于作出改变的情绪提供了许多机会。
And don't forget to bring water for the dog - not all trails have water sources available.
别忘了为狗带些水——并非所有的路线都能接近水源。
We are faced with new business opportunities every day, and not all are the right fit.
我们每天都面临着新的商业机会，但并不是所有的都是真正适合我们的。
Yet, there was an air about him that was not all of pity - that had aflush of pride in it.
但他脸上却有一种并非完全是怜悯的神气，其中泛着骄傲的红晕。
Have not all our efforts and hopes been directed towards greater freedom, justice, and prosperity?
我们所有的努力和希望不是已经指向更大的自由、公正和繁荣吗？
It will revolutionize the diagnosis, prevention and treatment of most, if not all, human diseases.
即使不是全部也将会使绝大多数的人类疾病的诊断，预防和治疗得到革新。
It's not all mundane either, in fact I've learned of many incredible opportunities through Twitter.
它其实一点都不平凡，事实上，通过Twitter我获得了许多难以置信的机会。
Yet in our business, it's not all about being well known. It's about how well you know your clients.
然而，在我们的业务中，不仅仅要为人所知，更需要知晓客户。
Yet in our business, it's not all about being well known. It's about how well you know your clients.
然而，在我们的业务中，不仅仅要为人所知，更需要知晓客户。
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