Rcl
abbr. runway center line （机场）跑道中心线
🗣️ 情景例句
I'm delighted to meet you, Mr. Peter.
皮特先生，很高兴认识你。
He is playing on the see-saw in the yard.
他正在院子里玩跷跷板。
Drinks can be cooled by placing them on ice rather than adding ice to them.
可以把饮料置于冰块之上来冷却，而不是把冰块加进饮料之中。