launch a satellite 发射卫星
orbit around 绕轨道运行
communication satellite 通信卫星
space exploration 太空探索
weather satellite 气象卫星
1. The space agency launched a new artificial satellite into orbit.
航天机构将一颗新的人造卫星送入了轨道。
2. Artificial satellites play a vital role in modern telecommunications.
人造卫星在现代电信中发挥着至关重要的作用。
3. Scientists are monitoring the data sent by the artificial satellite.
科学家们正在监测人造卫星发送的数据。
A: Do you know how GPS works?
A:你知道GPS是如何工作的吗?
B: It relies on signals from artificial satellites orbiting the Earth.
B:它依赖于绕地球运行的人造卫星发出的信号。
1) 指由人类制造并送入太空运行的机器
2) 主要用途包括通信、气象监测和导航
3) 与自然卫星(如月球)相对
1. 人造卫星
e.g.
The first artificial satellite was launched in
1957.
第一颗人造卫星于1957年发射。
noun
1. An object placed into orbit by human activity to serve a specific purpose such as communication, observation, or research.