学生们在做实验前分成四组。
The students were into four groups before doing experiments.
1856年，18岁的理科生威廉·珀金在做实验时注意到一些奇怪的事情。
In 1856, William Perkin, an 18-year-old science student, noticed something strange while doing an experiment.
他们在做实验阻止老鼠繁殖。
在做实验时，你必须小心地使用仪器。
In doing experiments, you must be more than careful with the instruments.
我想他们此时并不在做实验。
I don't think they're carrying out experiments at the moment.
当他在做实验时，他观察到这个物理现象。
As he was making his experiments, he observed this physical phenomenon.
在做实验时，不能过分依靠人类的感觉去做精确的观察。
When experiments are to be made, one cannot rely too much upon the human senses to make accurate observation.
在做实验时，不能过分依靠人类的感觉去做精确的观察。
When experiments are to be made, one cannot too much upon the human senses to make accurate observation.
每次实验之前都有预习作业，而且必须在做实验前上交。
Each lab will be preceded by a prelab assignment that must be turned in before doing the lab work.
还不知道。他们仍在做实验，看看用新的药物能不能起作用。
No, they're still doing tests and trying to figure out new medications in the hope that something will work.
对于清华大学新闻与传媒专业、26岁的王晓亚而言，做脱口秀更像是在做实验。
However, for Wang Xiaoya, 26, a graduate student majoring in journalism and communications at Tsinghua University, making a talk show is like doing an experiment.
我在做实验。我刚才说了，要看看听众朋友能不能听着我的声音分辨出我有没有笑。
An experiment. Like I said, I want to see if our listeners can tell if I'm smiling just by the sound of my voice.
研究表明，给一只在做实验手术的动物服用止痛片，使其体验更接近人类，这样能够改善结果。
Research has shown that giving pain-relieving drugs to animals that are undergoing experimental surgery may enhance the results, by making the animal's experience more like a person's.
教室里，我们正在做实验——烧不坏的手帕。手帕怎么烧不坏呢？别着急，听我娓娓道来。
The classroom, we are conducting experiments - not a bad burn handkerchief. Handkerchief how bad it is not burning? Do not worry, listen to me with his right.
尽管我的助手在做实验前已从头到尾仔细阅读了说明书，可由于他生搬硬套，没能获得满意的结果。
My assistant, who had carefully read through the instructions before doing his experiment, could not obtain satisfactory result, because he followed them mechanically.
成长是一个尝试和犯错的过程，就好像是在做实验——失败的过程同样也是试验最终成功的一个重要部分。
Growth is a process of trial3 and error: experimentation. The "failed" experiments are as much a part of the process as the experiment that finally "works".
很多孩子都是挂钥匙儿童，所以事故不断，我们听说一个小学上在做实验室严重烧伤，而他的哥哥当时就在旁边。
Many children are latchkey kids. Accidents are frequent; we heard of an elementary school student who badly burned himself in a science experiment, with his older brother watching.
我一直在做实验，以两个单元为单位建寓所，可以为两个家庭花较少的钱，建造既安全又整洁的家…对不起我不是想要说教。
But I've been experimenting. By building these in units of two, you can build safe, clean homes for two families for less than the cost... I'm sorry. I don't mean to preach.
空军专家说这架战机，也就是J20似乎在做高速滑行实验，这通常是试飞前的最后一个步骤。
Military aviation experts said the fighter? Known as the J-20? Appeared to be conducting high-speed taxi tests, which are usually the final stage before a test flight.
通过练习，你在做决策方面会变得更好，因为你学会了放弃完美和焦虑并且把结果看作是实验。
You'll get better at this with practice, as you learn to let go of perfection and worry and see decisions as experiments.
目前有科学家在做色彩对健康状况的影响方面的实验。
There are laboratory experiments about the affect of color on the state of a person's health.
在将近两年的时间里，在联合学院任教的沙布里一直在做这样一个实验。
For close to two years Chabris, who teaches at Union College, had been conducting this same experiment.
在做颗粒分离实验时，研究人员在一块大乐高板上插满了圆柱状乐高钉，然后把板垂直放入盛满粘性液体甘油的鱼缸。
For the particle-separation experiments, the researchers covered a large Lego board with cylindrical Lego pegs and placed the board vertically in a fish tank filled with glycerol, a viscous liquid.
来自法国的研究者们先是扫描了实验志愿者在移动眼球时的脑神经活动，然后又扫描了他们在做心算时的脑神经活动。
Researchers in France scanned the neural activity in the brains of people who were moving their eyes right or left. Then study participants were asked to do arithmetic in their heads.
那年伯查德正在做有关冷冻机隔热材料的实验，实验中他使用新的方法做出一种低密度的泡沫材料。
While Burchard was experimenting with refrigerator insulation, he came up with a novel way of molding low-density foam.
他也对处于睡眠状态(至少不是在做梦的睡眠阶段)的人做了同样的实验。
Tononi has gotten similar results when he has delivered pulses to sleeping people - or at least people in dream-free stages of sleep.
或者你在做化学实验，数据就是，需用的反应物的量，和你想合成的生成物的量。
And if you are doing chemistry then it could be how much you put of some reactant and how much of the output product that you wanted to synthesize generated.
或者你在做化学实验，数据就是，需用的反应物的量，和你想合成的生成物的量。
And if you are doing chemistry then it could be how much you put of some reactant and how much of the output product that you wanted to synthesize generated.
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