Children of educated and upper-middle-class parents turn out to be far more curious, even at early ages, than children of working-class and lower-class families.
比起工人阶级和下层家庭的孩子，受过教育的孩子以及中上层家庭的孩子甚至在很小的时候就更有好奇心。
2
Lower-class individuals felt that 5.6% was the appropriate slice.
下层阶级的人们则感觉分出5.6%比较合适。
3
The new bosses were condemned as 'too lowerclass'.