It's a family business, it may not bring in a lot of money, but it keeps the family together.
这是家族生意,虽然不一定可以赚大钱,但可将整个家庭凝聚在一起。
it has to develop (partly by means of touch) the ability to judge roughly three-dimensonal distances.
儿童必须发展(部分通过触觉)粗略判断三维空间距离的能力。