如何才能睡得更好,睡得更香?

　　Step 7: The Right bed You need to look after your bed. Turn themattress over every few months. It should get replaced every 10 years at least.

　　7.舒服的床

　　你需要照看好你的床。每隔几个月就把床垫翻过来。至少每隔10年要更换一次床垫。