Erts
abbr. Earth Resources Technology Satellites <美>地球资源技术卫星
🗣️ 情景例句
There's a park over there. Let's walk in the park for a while.
那边有个公园。我们去散散步吧！
The telephone is ringing,would you answer it,please?
电话正在响,你接吗？
some drifting and slow, others jerky and rapid.
这些活动有的飘忽而缓慢，有的急剧而快速。