A lot of people are still walking around with first generation kindles , " says hana .

“许多人仍在使用第一代Kindle，”汉娜说道。

How many kindles has amazon sold ?

亚马逊卖出了多少部Kindle？

E ink : the e ink inside kindles and barnes and noble 's nook allows the e-reading devices to run for days without a charge .

电子墨水：内置于kindles和barnes&noble品牌电子书的电子墨水让电子阅读设备不用充电就可以用上一天。

Amazon recently introduced seven new kindles , including a 7-inch tablet for $ 160 and an 8.9-inch tablet for $ 300 .

亚马逊最近发布了7款新的kindles产品，包括一款售价160美元的7英寸平板电脑和售价300美元的8.9英寸平板电脑。

For example , a study of struggling students found that the kids felt better about reading after a course in which they used amazon kindles .

例如，一项对学生开展的研究发现，孩子们使用亚马逊kindles阅读器可以更好地进行阅读。