Spst
[电] 单极单投
🗣️ 情景例句
Did you bring your transcript from high school?
你把高中的成绩单带来了吗？
It's a beautiful country with several chains of mountains.
这个国家很美，它有很多山脉。
It is our satellite. It is quite near us in space.
它是我们的卫星。它离我们相当近，仅38万公里远。