...develop better machines that use air
to do their jobs, as suction has long been used in robotics to grab objects.
The fascinating part of the study for robotics is that elephants can use air
suction both on ground and in water. The researchers are so impressed that they
suggest the elephant’s suct...
...erson who，还有的说who=whoever，whoever不是泛指意义吗？等于anyonewho，如果who＝whoever，那么who用在自由选择结构的含义是anyonewho？而不是the person who？那么wh词用于自由选择结构的意思等于wh-ever的any-that的泛指意义，还是不同于泛...
...y as a medium of communication.”Davey said nearly all of the photos have been taken either inside their home or no more than a 10-minute drive away. “I sit back and watch and I can kind of hear and see so I’m combining all my senses to what’s going on around me.” 4. 染色加粗文字阅...
在牛津词典里看到一句话，In recent years an extended use of literally ( and also literal ) has become very common , where literally ( or literal ) is used deliberately in non - literal contexts , for added effect , as in they bought the car and literaly ran it into the ground .请问老...
老师好， 试比较下列几句话： 1. It hasbeen raining all the day. I'm tired of it. 2. Have you been waiting long? 3. I have been waking up in the night a lot. 1句，可以理解，确实一整天中，每时都在下雨 2,3...
It hasbeena commonplace among critics that Hughes adopted the classic blues as the primary model for his blues poetry, and that he writes his best blues poetry when he tries least to imitate the folk blues. In this view, Hughes’ attempts to imitate the folk blues are too self-conscious, too dete...
老师，我在 VOA Special English看到这么一句话：【Vietnam has one of the worst
records on media freedom. Reporters Without Borders says it is the fifth least
free country out of the group's list of 180 nations.】【越南是媒体自由记录最差的国家之一。无国界记者组织...
This school break hasbeen unique for this generation,but as the new school year is set to begin,the questions now are when is it safe for kids to go back to school为什么不是This school break IS unique for this generation, 为什么说话者用了hasbeen 呢？ 二者究竟有何区别...
...感觉是语文文言文一样了。But the significant thing is not the behavior of the players but the attitude of the spectators; and, behind the spectators, of the nations who work themselves into furies over these absurd contests, and seriously believe—at any rate for short periods—that run...
The New York Times reports that this year's fire season hasn't beenas bad as it hasbeen for the previous two years, butthat's little comfort to those witnessing the flames flare up.上句flare up是否是witness的宾语补足语？即witness sb do sth这种结构呢？He witnessed two...
The research found that people who watched amovie in 3D had improved cognitive skills compared to those who watched it in 2D.前三处谓语时态对吗？可以换用其他时态表达同样意思吗？过去完成时是相对哪个过去动作？第二个谓语动词应该先于第三个，但从...
...going to be a key one, but the other one I think is the USTR position, and whoever that trade representative is will bea very very key person for us.请教老师：whoever that trade representative is 中whoever究竟是 the person who 还是 any person who 或者是 every person who ?显然， the ...
...ss cut jobs, and when the economy takes off, people get jobs. It has never been universityy educaiton to blame.请教老师，it只是代词，没有实际含义？It has never been university educaiton to blame. 此句等于When the economy is going down, business cut jobs, and when the economy tak...