Riometer
n. [物]宇宙噪声测量器, 相对电离层吸收仪(用以测量电离层对电磁波的吸收作用)
🗣️ 情景例句
I'm thrilled for you, Grandpa.
我真为你兴奋， 爷爷。
Perhaps he isn't here.
也许他不在这儿。
Hi! I'm sorry I was out when you rang.
你好！我很抱歉，你打电话时我出去了。