It was joyful, like watching dolphins in the air, and they surely pitied the earthbound.
观赏雨燕令人愉悦，就像观看空中的海豚，然后遗憾自己只是地上的凡人。
Though we know of gravity's inevitable victory, with every leap and lift, they express our secret hope to overcome our own earthbound limitations.
尽管我们都知道，地球引力不可战胜，但他们的每次跳跃和提举都表达了克服地球引力局限的希望。
Newton took the principles of motion and of gravitation as deduced from observations of earthbound objects and extended them to the motions of the earth and of the planets around the sun.
牛顿观察物体往地上落，演绎出运动原则和引力原则，并将这些原则扩展到地球的运动和环绕太阳运转的行星的运动。
The earthbound life required no grocery stores.
靠土地吃饭的生活不需要杂货店。
Indeed the structures of flight vehicles are very flexible when compared with Bridges, buildings, and earthbound machines.
实际上，与桥梁、建筑和地面上的机器相比，飞行器结构是非常灵活的。
Earthbound humans have 14.7 pounds per square inch of air pressing on them every second of the day. Space suits only put about 4.3 pounds of pressure per square inch on the wearer.
地球上的人每秒钟都承受着每平方英寸14.7磅力的气压，而太空服让宇航员所承受的气压只有4.3磅力。
Earthbound humans have 14.7 pounds per square inch of air pressing on them every second of the day. Space suits only put about 4.3 pounds of pressure per square inch on the wearer.
地球上的人每秒钟都承受着每平方英寸14.7磅力的气压，而太空服让宇航员所承受的气压只有4.3磅力。
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