英汉双语例句-生物医药大词典

A few years back researchers thought that hydrogen could be extracted chemically onboard from liquid hydrocarbons such as methanol, but those schemes did not pan out.

中文意思：
几年前，研究人员认为，可以在车上直接利用化学方法，从甲醇等液态碳氢化合物中释放出氢气，但结果并不成功。

以下为相关句子列表(点击查看，可以看对应的解释）：

	A few years ago, geneticists managed to get rice to produce one of the enzymes needed for C4 photosynthesis by transplanting the relevant gene from maize.			几年前，遗传学家通过将玉米中的相关基因转入水稻，从而在水稻中成功合成了C4光合作用必需酶的一种。
	A few years ago, he would have become a nuisance.			如果几年前，他可能就变成惹祸精了。
	A few years ago, it would have needed a shoe-box of electronics to drive it, and it would still have been hit-or-miss.			几年前，它还需要鞋盒那么大的电子器件来驱动，而且还经常搞错。
	A few years ago, sociology is the most popular subject for undergraduate.			几年之前，社会学是大学本科生最欢迎的课程。
	A few years ago, that Tangshan street boasted not much more than a scrapyard for old machines.			几年前，唐山的那条街道不过就是废旧机器的垃圾场。
	A few years back researchers thought that hydrogen could be extracted chemically onboard from liquid hydrocarbons such as methanol, but those schemes did not pan out.			几年前，研究人员认为，可以在车上直接利用化学方法，从甲醇等液态碳氢化合物中释放出氢气，但结果并不成功。
	A few years from now techniques will have improved and the wasteful loss won't be as excessive.			从现在算起几年以后，技术将会有长足的进步，无谓的损失就会极大地降低。
	A few years later he was able to take out his first patents for high-frequency AC generators and transformers.			数年以后，他就获得了发明高频交流，发电机和变压器的专利—这也是他获得的最初两项专利。
	A few years later, I found those notes. When I took them out to look at them, I noted that the handwriting was different on the two notes apparently.			几年前，我找到了那些字条。当我拿出来看的时候，我发现两张字条的字迹明显不一样。
	A few years later, a smart and sporty picture of the visitor comes Clinton County home.			数年之后，一位英俊潇洒、神态威严的客人光临林顿家。
	A few years later, penicillin was being mass-produced and helping to save the lives of millions.			若干年后，青霉素被大规模生产，帮助挽救了成百万人的生命。