他们已在临床试验中接受过这种药物的治疗。They have been treated with this drug in clinical trials.这只不过是你可以做的各种试验中的一例罢了。That's just one example of the kind of experiments you can do.跟我说说你的临床试验。进展如何？Tell me about your clinical trials. How...
I owe them a debt that cannot easily be repaid.我欠他们一笔钱，不容易偿还。The business quickly repaid the initial outlay on advertising.这家公司很快偿付了初期的广告费。She doesn't intend to be repaid to her kindness.她不图回报她的好心....