Rcl
abbr. runway center line （机场）跑道中心线
🗣️ 情景例句
Davis Aerobics Center for Good Health.
Davis有氧运动健身中心。
It all depends.
视情形而定。
Two factors weigh heavily against the effectiveness of scientific research in industry.
两个因素严重地影响工业里科学研究的效果：