我们都知道油脂发臭就变坏了。
我们都知道偷税漏税是绝对不行的。
我们都知道回到内布拉斯加生活不太可能尽如人意。
We all knew that life was unlikely to be a bed of roses back in Nebraska.
我们都知道饭店中大部分葡萄酒标价过高：在成本价上涨200％被认为是正常的。
We all know that most wine in restaurants is over-priced: a markup of 200 percent on cost is considered normal.
我们都知道人们会摸索着前进。
我们都知道合作，但是我们怎样才能有这样的能力呢？
We all know that cooperation, but how can we have such an ability?
我们都知道足球是世界上最受欢迎的运动之一。
We all know that one of the world's most popular sports is football.
我们都知道冬天时会有数百万只鸟飞到洞庭湖。
We all know that millions of birds fly to Dongting Lake in winter.
我们都知道大多数汽车、摩托车、船只和飞机会造成空气污染。
We all know that most cars, motorcycles, boats and planes cause air pollution.
我们都知道许多学生经常上网，但我们惊讶的是，90%的人每天都使用互联网。
We all know that many students often go online, but we were surprised that ninety percent of them use the Internet every day.
我们都知道，没有人是完美的。
我们都知道吸烟和癌症之间有联系。
We all know that there is a connection between smoking and cancer.
我们都知道需要解决的问题。
我们都知道熊猫是一种濒临灭绝的物种。
We all know that panda is a species that is on the edge of extinction.
我们都知道她不适合去陌生人中间生活。
We all know that she is not fashioned for a life among strangers.
我们都知道他是个大坏蛋。
例如，我们都知道要求老板加薪有多难。
We all know how difficult it can be, for instance, to ask the boss for a raise.
我们都知道，我们周围的环境是越来越糟。
As we all know, the environment around us is getting worse and worse.
我们都知道参加体育活动有助于增强体力。
We all know the fact that taking part in the physical exercises helps build up our strength.
例如，我们都知道，狗通过气味来识别彼此。
For instance, as we all know, dogs recognize each other via smell.
我们都知道这件事。
托德有钱，这我们都知道，但他不是百万富翁。
我们都知道居里夫人和她许多科学成就的故事。
We all know the story of Marie Curie and her many scientific achievements.
我们都知道，人们对十三这个数字充满敬畏和恐惧。
Thirteen, as we well know, is regarded with great awe and fear.
我们都知道这些的味道，就像尝到和矿泉水的味道。
We all know what these taste like, from tasting blood and mineral water.
我们都知道很容易追随潮流，但很难建立自己的风格。
We all know that it's easy to follow fashion but rather difficult to establish our own style.
我们都知道经常去快餐店比如说麦当劳吃饭是不健康的。
We all know that it's not healthy to have meals in fast-food restaurant like McDonald's frequently.
我们都知道科学在我们生活的社会中扮演着重要的角色。
We all know that science plays an important role in the societies in which we live.
我们都知道，我们的梦想很少与那天发生在我们身上的事有关。
We all know that very little of what we dream is concerned with what happened to us that day.
我们都知道，我们国家急需老师，但并没有很多人想成为老师。
As we can see, teachers are badly needed in our country, but not many people want to become teachers.
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