The students were into four groups before doing experiments.
学生们在做实验前分成四组。
They provided a place for doing experiments in space and practicing spacecraft docking.
他们提供了一个在太空中做实验和练习航天器对接的地方。
我喜欢做试验。
You can't be too careful in doing experiments.
你做实验要特别小心。
We rely on them to be careful in doing experiments.
我们相信他们在作实验的时候是非常谨慎的。
We've been doing experiments 24 hours without a break.
我们的实验已连续不断地进行了二十四小时。
We've been doing experiments 24 hours without a break.
我们的实验已连续不断地进行了二十四个小时。
They are doing experiments to inhibit mice from breeding.
他们在做实验阻止老鼠繁殖。
Students must obey a set of rules when doing experiments.
当学生做实验时，必须遵守一系列规定。
The scientist is doing experiments no one has so far attempted.
科学家们正在作一项迄今为止没人做过的尝试。
Doing experiments is a good way to find out answers to questions.
做实验是找到问题答案的好方法。
Weshould follow the rules of the lab when we are doing experiments.
我们做实验时，就要遵守实验室的规则。
She likes doing experiments, but sometimes she is a little careless.
化学课上喜欢做实验，但有时粗心大意；
In doing experiments, you must be more than careful with the instruments.
在做实验时，你必须小心地使用仪器。
Psychologists are often accused by laymen of doing experiments to prove the obvious.
心理学家经常被外行人指责他们用实验去证明一些显而易见的事情。
All that he enjoys is doing experiments in the lab, and nothing can turn his mind from it.
他的全部兴趣就是在实验室里实验，任何东西都无法转移他的注意力。
Doing experiments is an important method in the research of durability of concrete structures.
混凝土结构的耐久性试验是研究结构耐久性的重要手段。
Scientists are doing experiments along the Swiss-French border to find the secrets of the universe.
科学家们正在瑞士-法国边境进行实验以揭开宇宙的秘密。
We typically associate the word "science" with a person in a white coat doing experiments in a laboratory.
我们一般认为从事科学研究的人是那些穿着白大褂在实验室里做实验的人。
After school, we enjoy all kinds of activities, such as going for sports, doing experiments or surfing the Internet.
放学以后，我们喜欢各种各样的活动，体育，做实验或网上冲浪。
After class we enjoy all kinds of activities, such as going in for sports, doing experiments or surfing the Internet.
放学后，我们享受各种各样的活动，例如进行运动，做实验或上网。
According to records of students' doing experiments, students of the surveyed class have more ability to operate than other class.
从实验课上学生的实验操作过程及实验报告的记录情况来看，实验班学生的实验操作能力要好于对照班。
Fourthly, although most students have the aspiration of doing experiments the chances of operating by themselves are still not enough.
虽然大多数学生具有要做实验的要求，但是学生的动手操作机会仍然较少。
Soon people were complaining that the young operator was doing experiments and reading the shop's books in between sending and receiving messages.
不久，人们便提出意见，说这个年轻的报务员总在接发电文的间隙做各种实验，或阅读那家书店里的书籍。
Soon people were complaining that the young operator was doing experiments and reading the shop's books in between sending and receiving messages.
不久，人们便提出意见，说这个年轻的报务员总在接发电文的间隙做各种实验，或阅读那家书店里的书籍。
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