Based on the experience, the authors set forth a series of practical methods for electroen ˉ cephalograpns verification.本文作者结合多年的实际工作经验, 研究总结出一套实用的脑电图机检定方法,以供参考....
这可是件很苦的差事，不过我喜欢。It was jolly hard work, but I loved it.顶苦的是那些老人与妇女.The worst off were the old folk and women.象他那样吃过苦的人,谁能不得肺病?Who wouldn't be tubercular from the punishment he received?...
The wind was bouncing the branches of the big oak trees.一棵棵高大橡树的枝条随风摇摆。High winds have knocked down trees and power lines.大风刮倒了树木和电线。There was a drift of smoke above the trees.树林上空飘浮着一股烟。...
The Sahara Desert is arid.撒哈拉沙漠非常干燥.A petroglyph emerges from the Sahara Desert.这是撒哈拉大沙漠里的一块岩石画。The Sahara Desert is a natural barrier between North and Central Africa.撒哈拉沙漠是北非与中非之间的天然屏障....