大脑需要持续供氧。The brain requires a constant supply of oxygen.氧气泡a bubble of oxygen医院中抗甲氧西林金黄色葡萄球菌感染病例不断增长的发生率rising rates of MRSA infections in hospitals...
The runway is clear — go ahead and land...跑道畅通无阻，开始着陆吧。Finally the son of a bitch walked out of one of the buildings near the runway there.那混蛋终于从跑道附近的一幢房子里走了出来。The pilot taxied the plane to the end of the runway.飞行员将飞机滑行...
月球绕地球运行的轨道不是浑圆的, 而是椭圆的.The moon doesn't describe a circle round the earth, but rather an ellipse.本文介绍了一种鲜为人知的用直径距离描绘椭圆的方法.This paper introduces a rarely seen method of describing with diametral distance.叶子的形状;椭圆的形状....