他研究了摆线 、 圆外旋轮线和四点圆的旋轮线的几何性质.He investigates geometrical properties of cycloids , epicycloids, and hypocycloids.而在答应出现动力性外旋时则出现了更明显的滞后现象.Hysteresis was significantly greater when dynamic external rotation was allowed to o...
She leads a gay and wild life.她过着放荡不羁的生活。A poet could not but be gay in such a jocund company.一个诗人在这种兴高采烈的同伴中自然而然地会快乐。Legalizing gay marriage will open the door to all kinds of crazy behavior.同性婚姻合法化会让人们开始各种疯狂的行为.He has ...
昨天至少30名攀登者登上了顶峰。Yesterday no fewer than thirty climbers reached the summit.攀登者一失足掉下去摔死了。The climber slipped and dropped to his death.攀登者越爬越高.The climbers mounted higher and higher....