Coelostat
n. [天]定天镜( 观测或拍摄天体时镜面与地轴一同转动可使图像固定不动)
🗣️ 情景例句
I have a lot of work to do to get ready for tomorrow.
我得为明天做许多准备工作。
Oh, half-and-half, you know.
马马虎虎。
He's not in his office at the moment.
他现在不在办公室里，