固态硬盘越用越慢的原因固态硬盘会越用越慢，这和固态硬盘的工作原理有很大的关系。固态硬盘使用闪存作为储存介质，而闪存有个特性：必须先擦除之后才能再次写入数据，这一点和机械硬盘不同，机械硬盘可以直接在数据上面覆盖写入。
if we take short breaks__.19. Food in small pieces could be eaten easily from the sun twigs which_ turned into chopsticks.20. Walls make of adobe take in the heat from the sun on hot days and give out that heat_ during cool nights， thus warning the house.21. …
