大家都搜：
自然实验；天然实验
1、experiment on───vt.对…进行实验；试用；在…上做实验
2、factorial experiment───[数]析因实验；因子试验
3、chromatography experiment───色谱实验
4、cavendish experiment───卡文迪什实验
5、natural───adj.自然的；物质的；天生的；不做作的；n.(Natural)人名；(西)纳图拉尔；n.自然的事情；白痴；本位音
6、metallographic experiment───金相实验
7、scientific experiment───科学试验；[试验]科学实验
8、social experiment───社会实验
9、experiment───v.尝试；试验；进行实验；n.实验，试验；尝试
1、We test the causal Gateway Theory of drug use dynamics by way of a natural experiment.───我们测试的因果理论的网关药物使用动态的方式自然实验。
2、Occasionally, though, historygenerously serves up a natural experiment.───然而有时候，历史会慷慨地奉上自然实验。
3、In that sense, they have provided us with a natural experiment that suggests that excess levels of PP over a long period are safe.───那么，他们就为我们提供了一种自然实验，这个实验可以说明长时间的胰多肽过量是安全的。
4、What we saw was a natural experiment.───这一切都是真实而自然地发生的。
5、The juxtaposition of Rubinstein and Schueller, though, is most interesting as a kind of natural experiment in entrepreneurial style.───作为对企业模式探究的一种自然试验，赫莲娜与Schueller放在一起最有趣不过了。
6、In some sense, the natural experiment of those scientists dying revealed exactly the boundaries of this invisible college.───在某种意义上说这些垂死的科学家正处于这些无形学院的前沿。
7、is a publication this week which was thought to be a natural experiment with sand carrying iron dust into the ocean.───本周公布了一个曾被公认的自然实验，它是把沙子和着铁屑一起倾倒在海洋里。
8、But I am sorry to report that his wild speculations have now been confirmed by an intriguing natural experiment.───我非常遗憾地告诉你，他的大胆揣测现在已经被一项有趣的自然试验证实了。
1、An interesting natural experiment arose when the entire school moved over to the new pathway course in 1987.
2、Records from the life-or-death situations on board the two ships provide a natural experiment that could never be done in a lab, comments behavioral economist Colin Camerer of Caltech University.