Pterosterone
蝶甾烯酮, 六羟基胆甾烯酮
🗣️ 情景例句
Hey, leaving me?
嗨 ，丢下我啦？
I'm always disappointed when I don't get any mail.
当我收不到任何邮件时，我总是很失望。
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。