Astronomers used to ask why only Saturn has rings.天文学家们过去一直感到奇怪,为什么只有土星有光环.Saturn was to launch the 15 th flight, a Moon orbital mission.第15次飞行利用萨杜恩将飞船送人月球轨道.The Saturn family of launch vehicles falls into three types or...
The feast was served by his mother and sisters.这顿美餐是他母亲和他的姐妹们准备的。Lucilla often asks her sisters to retell the story.露西拉经常要姐姐们把这个故事反复讲给她听。His sisters are grown up and his parents are middle-aged.他的姐妹们都已成人，而他的父母亲也人到中年。...
My foot [ nose ] tickles.我的脚 [ 鼻子 ] 痒.A beard doesn't scratch, it just tickles.下巴上的胡子不刮人，就是叫人痒痒。It tickles me to see him riled.看见他生气我就觉得忍俊不禁。My face tickles all over with cobweb sensation, but I ignore it.我的脸像粘上蜘蛛网一...