分布式的拒绝服务攻击需要用许多台电脑对一个网站集中进行流量轰炸，使其因负担过重而不能提供正常的服务。
A distributed denial of service attack involves using many computers to bombard a Web site with an overload of traffic, knocking it offline.
尽管我可以打高尔夫、可以健身，并且也成功地适应了我的“新的正常状态”，但是个人负担的费用是很可观的并且是长期存在的。
Although I can play golf and exercise and have successfully adapted to my "new normal," the personal costs are significant and long-lasting.
超重当然会威胁到人体健康。 而新的研究证据显示，它也可能给正常的智力增加额外的负担。
Being overweight is certainly risky for your physical health, but new evidence suggests that it may carry an added mental-health burden as well.
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