Наука и техника
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。PDF资料是该领域的重要参考
The deposit return scheme (DRS) enables the return of drinks containers for recycling and reuse including glass bottles
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If you're wondering what it is about the Kindle Paperwhite Kids that makes it our favorite pick for youngsters, Mashable's Samantha Mangino says in our roundup of the best Kindles that "More than anything else, a Kindle for kids has to be waterproof, which is why the Kindle Paperwhite Kids is the best choice." That's certainly not all, though. Mangino also notes that, "what makes it great for kids is that it's a distraction-free device. It doesn't come with ads, notifications, or the temptation of games or video."