不幸的是，他很痛苦，因为他的研究与他对治疗的好奇心不相容。
Unfortunately, he was miserable as his research wasn't compatible with his curiosity about healing.
另外一点是，这个城市一直都关注未来，因为它的过去很痛苦。
The other point is that this city has always focused on the future because its past has been so painful.
允许Ad.ly在自己的微博中搞广告“一开始很痛苦，但是逐渐就适应了，因为那些产品和服务都还不错”。
Allowing Ad.ly to ghostwrite his tweets "was painful at first, but easier and easier because the products and services are respectable."
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