He has finally cracked the system after years of painstaking research.
经过多年的努力研究，他终于找到了破解这个系统的`办法。
Forensic experts carried out a painstaking search of the debris.
法医专家对残骸进行了极其仔细的搜索。
They were locked in a passionate embrace.
他们热烈地拥抱在一起。
We were both very tender and passionate towards one another.
He brought to the job not just considerable experience but passionate enthusiasm
他不仅给这一工作带来了不少经验，而且倾注了极大的热情。