Usually a house is too expensive for the salary-earning class to buy.
通常房屋太贵,工薪阶层买不起。
In secondary school, children get more advanced knowledge.
中学的小孩会得到进一步的知识。
After all, all living creatures live by feeding on something else, whether it be plant or animal, dead or alive, and it is only by chance that such a fate is avoided.