你可以从做一次试验开始。
试验开始前进行脑扫描。
Brain scans were taken before the beginning of the experiment.
试验开始前，两组女性中约有半数都存在热潮红现象。
About half of the women in both groups started the study complaining of hot flashes.
我们从海因里希。赫兹的试验开始，你也能尝试这个试验。
We will begin with Heinrich Hertz's experiment. You can also try this experiment.
实际上，所有四组参与者在第三年试验开始时全都恢复了最原始的体重。
In fact, all four groups were on track to be right where they started by year three.
食品业开始认识到微波炉应用的潜力和多用途。于是新的应用试验开始了。
As the food industry began to recognize the potential and versatility of the microwave oven, its usefulness was put to new tests.
分别在正式试验开始后的第15、3 0天，取样化验测定蛋中锌、硒的含量。
Both zinc and selenium in eggs were assayed on days 15 and 30 after the experiment started.
在试验开始前，这些美国人一天摄入的热量为1800卡路里到2200卡路里。
Before the trial, all participants had been consuming between 1, 800 and 2, 200 calories a day.
社区居民在试验开始前3个月未使用抗生素，没有需要定期治疗的肺部慢性疾病。
Community dwellers could not have taken an antibiotic in the previous 3 months and could not have a chronic medical condition involving the lung that required regular medical therapy.
试验开始48周之后，那些植入基因的志愿者和其他志愿者之间没有统计学上的区别。
Test 48 weeks after the start, those implanted gene volunteers and other volunteers are not statistically different.
试验开始19年后，34%的不跑步的人死掉了，相比之下只有15%坚持跑步的人死亡。
Nineteen years into the study, 34% of the non-runners had died compared to only 15% of the runners.
在晚上11点22分，我们的试验开始仅4个小时后，她打开了她的电话，开始疯狂发短信。
At 11:22 p.m., just four hours into our experiment, she turned on her phone and started mad texting.
在试验开始和妊娠第100天采集母猪血清样，在泌乳中期和断奶前采集母猪血清样和奶样。
Serum samples were collected at the start of the trial and on d 100 of gestation, and both serum and milk samples were collected at mid lactation and prior to weaning.
这个研究发现，在试验开始后，接受药物的男性比那些接受安慰剂的有更高一些的机会活过12年。
The study found that the men who received the drug had a slightly higher chance of being alive 12 years after the start of the trial than those who took the placebo.
在这项试验开始之前，美国食品和药物管理局(US Food and Drug Administration)曾指出，在考虑颁发这种双疫苗的美国许可权之前，还需进行一些其他相关的研究。
Before the trial began, the US Food and Drug Administration said other studies would be needed before the vaccine could be considered for US licensing.
第一批临床试验预计明年开始。
戴金从1957年开始试验雨刷器，当时他的导师让他设计一个电动雨刷马达。
Daykin began experimenting with windshield wipers in 1957, when his supervisor asked him to design an electric wiper motor.
这个人卖掉了他的房子，买了一顶帐篷，在海边搭起帐篷，开始在鹅卵石上试验。
The man sold his house, bought a tent, camped on the seashore, and began testing pebbles.
该试验非常成功，让现在这个大学所有的内科住院医生在项目开始时就都能获得iPad。
The experiment was so successful that all internal-medicine residents at the university now get iPads when they begin the program.
从一个试验项目开始，并期望在进行过程中更改细节。
Start with a trial program, and expect to change the details as you go.
这项研究涵盖了参加“目标追踪计划”项目的学校中的386名幼儿园学童，该项目是一个美国的多点临床试验项目，从1991年开始追踪儿童一生的发展情况。
The study included 386 kindergarteners from schools in the Fast Track Project, a multi-site clinical trial in the U. S. that in 1991 began tracking how children developed across their lives.
两次试验之后，我们开始真正执行任务。
开始试验时有时不很顺手，也是很自然的。
It is to be expected that an experiment will sometimes run into a snag at first.
酿酒师开始用这种菌株试验。
好，我们会到这边来把球给你们,已经拿到球的同学就可以开始试验了。
Those of you who have your ping-pong balls can now begin the experiment.
图书馆已经开始试验这些方法，但是单个图书馆的规模可能不足以解决本地或者个人的特性。
Libraries have begun to experiment with these approaches, but individual libraries may not have the scale to iron out local or personal idiosyncrasy or emphasis.
利用最典型的美食发明才能，日本大厨已经开始试验水母冰淇淋和水母豆腐的配方。
With typical culinary inventiveness, Japanese chefs have already begun experimenting with recipes for jellyfish ice cream and jellyfish tofu.
利用最典型的美食发明才能，日本大厨已经开始试验水母冰淇淋和水母豆腐的配方。
With typical culinary inventiveness, Japanese chefs have already begun experimenting with recipes for jellyfish ice cream and jellyfish tofu.
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