You may then experience the thoughts and emotions that you have as a cloud surrounding you, a cloud that you can focus your attention on or not.
你可能会体验到你的思想和情绪就像是云朵一样环绕在你周围，你能集中注意力在云朵之上或者不能。
Promoters themselves are activated by other molecules, and whether they are switched on or not depends on whether the cell they are in provides the necessary stimulation.
启动子自身则由其他分子激活，这些启动子能否表达取决于其所在的细胞是否给其必要的刺激。
All of the incentive is really on winning and not losing on the field or on the court.
所有的激励真的都是为了在运动场或球场上赢而不是输。
Just try not to vomit on your textbooks or computer screen.
只是尽量不吐在你的课本或电脑屏幕上。
There are no information signs in four languages on our public buildings or monuments; we do not have multilingual guided tours.
我们的公共建筑或纪念碑上没有四种语言的信息标志，我们也没有多语言的导览行程。
Complex life evolved on the Earth's surface, but not on Mars or other planets in the solar system because on those planets, early surface life was killed by UV radiation.
复杂的生命在地球表面进化，而不是在火星或太阳系的其他行星上，因为在那些行星上，早期的地表生命被紫外线杀死了。
You can use margarine instead of butter on your potatoes, or not put so much cheese on the top of your pizza.
你可以用人造黄油代替黄油涂在土豆上，或者不要在你的比萨饼上放那么多的奶酪。
If you have a cold or flu, you'd better not pass it on to anyone else.
如果你得了感冒或流感，最好不要把它传染给别人。
Older people should not skimp on food or heating.
老人吃饭和取暖不应吝惜。
Do not be deceived by claims on food labels like "light" or "low fat."
不要被食品标签上像“少脂”或“低脂”的字样误导。
We did not want people on the show who are purely interested in plugging a book or film.
我们不想让那种纯粹只对宣传某书籍或电影感兴趣的人上节目。
Mr. Simon said he was not against taxes as such, "but I do object when taxation is justified on spurious or dishonest grounds," he says.
西蒙先生说过他并不反对税收本身，“但我确实反对以无根据或不诚实的理由征税，”他说道。
Modelling yourself on someone you admire is not the same as aping all they say or do.
以你仰慕的某个人为榜样并不等于模仿他们的全部言行。
If you suspect a gas leak, do not strike a match or even turn on an electric light.
假如你怀疑有煤气泄漏，不要划火柴，甚至连电灯都不要开。
The jury is out on whether or not this is true.
这是否属实尚无定论。
On the way, they must not kick or throw their cheese, or go into their competitors' lane.
他们不能在路上踢或是扔奶酪，或是闯入其他参赛者的赛道。
I don't know whether I had my hands on the steering wheel or not.
我不知道我的手是否在方向盘上。
Streams flowed where nature intended them to, and water-driven factories had to be located on their banks whether or not the location was desirable for other reasons.
溪水的流向听从大自然的计划，不管有没有其他原因支持这个选址，水力驱动的工厂都必须设在河岸上。
To stay safe, do not stand under trees, on hills or near water.
安全起见，不要站在树下、山上或水边。
He went on, "The enzyme is not harmful to humans or animals, and it is friendly to the environment."
他接着说，“这种酶对人类和动物没有伤害，而且对环境是友好的。”
Once we've read the material, we want to discuss it or hear it elaborated on, not repeated.
一旦我们读了材料，我们想要的是讨论内容或听到更多细节，而不是材料的重复。
These days, the time is everywhere: not just on clocks or watches, but on cellphones and computers.
如今，时间随处可见：不仅在钟表上，在手机和电脑上也能看到。
They also asked the children for their views on whether boys or girls should not play any of the four instruments.
他们还询问孩子们，对于男孩或女孩是否不该演奏这四种乐器中的某一种，他们怎么看。
Whether they're good manners or not depends on where you are.
他们是否有礼貌取决于你在哪里。
Multiple genes behaved differently, depending on whether someone had eaten or not before walking.
多种基因表现不同，这取决于一个人在行走前是否吃过东西。
On special days, people often use roses or forget me not to express love.
在特殊的日子里，人们经常用玫瑰或勿忘我来表达爱意。
Do we or do we not go on holiday?
我们去不去度假？
For women in the military, the search for equality will still be based on functional equivalence, not identity or even similarity of task.
对于军队中的女性来说，寻求平等仍然是基于功能对等，而不是身份甚至任务上的相似性。
Exams should be a method to test whether students grasp the knowledge or not instead of a burden on them.
考试应该是检测学生是否掌握知识的一种方法，而不是成为学生的负担。
Implicitly or explicitly, American fashion addressed a democracy, whereas traditional Paris-based fashion was prescriptive and imposed on women, willing or not.
美国时装明着暗着都会强调民主，而以巴黎为基础的传统时装则是约定俗成的、不管女性愿不愿意强加于她们的。
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