Latchkeys
n. 闩锁钥匙, 弹簧锁钥匙( latchkey的复数形式 )
🗣️ 情景例句
What do you think about the shipment?
你对货运是怎么考虑的？
How long is the ticket valid?
这车票有效期多久？
since ground stations and satellites cannot see everywhere.
因为地面工作站和卫星不可能看到地球上的每一个地方。