单词:disk head seek
[计] 磁盘磁头寻道
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AS IT IS 2016-07-07 DC Activists Aim to Offer Paid Leave to Parents 华盛顿活动人士为父母们争取带薪休假 Working parents in America are increasingly sharing childcare. In other words, both mothers and fathers go to a business or office
SCOTT SIMON, HOST: Something unexpected is happening in the West's biggest cities. Population is booming, but water use is staying the same or in some cases, actually going down. From member station KUNC, Luke Runyon reports on what to credit for all
There probably werent many animals of Cretaceous that would dare to try to grab a baby Tyrannosaurus Rex. Quetzalcoatlus could probably manage it. If you see a stork on the Nile today eating a baby crocodile, you can imagine in your mind Quetzalcoatl
Like sea turtles who from the moment they hatch they are on their own. For predators, hatching time is a veritable feast. Even so, the strategy works. Carnivores gulp down virtually every hatchling, but a few do make it, not even the most voracious f
By Claudia Blume Singapore 27 October 2007 For many people, toilets are not a particularly pleasant topic. Not so for Singaporean entrepreneur Jack Sim. He founded the World Toilet Organization to draw attention to the devastating health problems poo
They tracked more than one thousand children over the course of fifteen years, 之后对1 000多名儿童进行了为期15年的跟踪研究, repeatedly assessing the children's cognitive skills, language abilities, and social behaviors. 反复地评