Sfy
abbr. standard facility years(s) 标准设备寿命
🗣️ 情景例句
Let's plan an after-graduation trip!
让我们计划一次毕业后的旅行！
We have to go this way.
我们必须往这条路上走。
Imagine a star up t twenty times larger, brighter, brighter and hotter than our own sun.
设想一下，一颗恒星比我们的太阳还要大，还要亮，还要热20倍，