It is now thought that the Pyramids were not built using slave labour.人们现在认为金字塔当年不是靠做苦工的奴隶建成的。He's been forced into slave labour at burger bars to earn a bit of cash.为了挣点钱，他被迫到卖汉堡的小店里做苦工。She had drudged in other people's kitchens till she married.结婚前她一直在别人家的厨房里做苦工。