Dgps
差分GPS系统
🗣️ 情景例句
Hey, what did you do on your trip?
嗨，旅游时玩的怎么样？
Laws catch flies but let hornets go free.
法网只捉苍蝇，不捉黄蜂。
My pen dropped on the ground when I was walking in the park.
当我在公园里散步的时候，我的钢笔掉到地上了。