It is in this sense that an astronaut orbiting the earth in a space capsule is said to be "weightless" . 就在这种意义上，宇宙飞行员在宇宙密闭小舱里，环绕地球飞行时被说成是“失重”了。
Such tumultuous, often visually spectacular, interstellar regions surrounding youthful stars are known as gaseous nebulae . 这种环绕着年轻星的动荡且常常是壮观的星际区域，叫做气体星云。
Though it is popular to speak of the moon as a dead world, an orbiting cinder, scientists are not so sure . 虽然人们通常都说月球是一个死的世界，一团环绕轨道运动的溶滓，科学家可不那么断定。
In front and on either side of them were the control panels for lm's guidance, communications, environment, and propulsion systems . 在他们面前和两边，是登月部分的响导通讯、环绕和推进系统。
Satellites orbiting round the earth have provided scientists with a vast amount of information about conditions in outer space . 环绕地球运行的人造卫星，为科学家提供了有关外层空间的大量资料。
Satellites orbiting round the earth have provided scientists with a vast amount of information about conditions in outer space . 环绕地球运行的人造卫星为科学家们提供了大量有关外层空间情况的资料。
He forgot the whole damned business of living with the evening wind on his forehead, and the encircling trees soothing his eyes . 他完全忘记了一切世俗的烦恼。时近黄昏，微风拂面。绿树环绕，满目荫凉。
A body subjected to gravitational attraction by the earth and orbiting the latter according to the law of celestial mechanics must be termed a "celestial body" . 一个受到地球引力吸引，并按照天体力学定律环绕地球运转的物体必须叫做“天体”。
Inside place surround the sum to settle the powe : 4 20w3 中置环绕额定功率4 20w3
The man lived in a house with tall trees around 那人住在一所高树环绕的房子里。
