painstakingly
adv. 煞费苦心地；费力地
例句
As with Sisyphus, the boulder was painstakingly rolled upwards only to tumble back down again in an absurd exercise of futility.
和西西弗斯一样，巨石费力地向上滚动，结果又滚了下来，徒劳无功。
Broken bones were painstakingly pieced together and reshaped.
断裂的骨头被十分小心地拼凑到一起重新成形。
《柯林斯英汉双解大词典》
The cause they contrived so painstakingly also ended in failure.
他们惨淡经营的事业也以失败而告终。
《新英汉大辞典》
