teach laboriously辛苦地教学
preserve laboriously吃力地维持
sing laboriously努力地歌唱
face laboriously艰难地面对
pick laboriously费劲地挑选
work laboriously辛辛苦苦;辛勤地工作
dig laboriously吃力地挖
gather laboriously勤奋地收集
labour laboriously艰难地劳动
"their lives were spent in committee making decisions for others to execute on the basis of data laboriously gathered for them"