abbr. signaling and supervision techniques study 信号传送与监听技术研究; space surveillance and tracking satellite 空间监视与跟踪卫星; space-based surveillance and tracking system 天基监视与跟踪系统
🗣️ 情景例句
Please keep two for us to pick up.
请给我保留两张。
That sounds OK. I'll need it from the 10th to the 14th.
听上去挺不错。从10号到14号我需要租一辆。
We can stop here on the right beyond the tree. Let's make our camp here.