before and after studies的意思|示意

EXAMPLE: During my salad days immediately after I finished my university studies, I tried a lot of different jobs before finding one which I enjoyed and in which I succeeded.

在大学学习之后的初出茅庐时期，我尝试过很多不同的工作，最后才找到了一个我喜欢的，并由此取得成功。

Two randomized controlled trials (RCTs), one before-and-after study and two retrospective reports on clinical efficacy and safety were retrieved, together with 18 pharmacokinetic studies.

检索到与临床功效和安全性相关的两个随机对照试验(rct)、一个前后对照研究、两个回顾性报告，以及18个药物动力学研究。

This experiments studies on the changes of plant endogenous hormones of different alfalfa cultivars with different root regeneration ability(RRA)before and after their taproot were pruned.

研究根系发育能力不同的苜蓿品种在主根受伤后内源激素的变化。

After a couple of years, the guy finally graduated and decided to further his studies overseas. Before leaving, he proposed to the girl, "I'm not very good with words, but I simply know I love you."

几年之后，男孩终于毕业了并决定去国外深造，离别之前，他向女孩求婚：“我不太善于言辞，但我知道我很爱你。”

Also, they did not take into consideration the changes in prescribing patterns before and after the regulatory warnings between 2003 and 2005, which have been highlighted in other studies.

而且，他们也没有将考虑过2003年- 2005年间在强制性警告发布前后开药模式上的变化。这在其他研究中都得到了明确指出。

We found 102 studies conducted in 39 countries; 60 were designed before and 42 after the guidelines were issued.

研究发现，在39个国家进行的102项研究中，60项研究设计于指南发表前，42项研究设计于指南发表后。