Rnr
abbr. runner 參加賽跑者，（雪橇，溜冰鞋的）滑走部分
??? 情景例句
I know it well.
我非常清楚。
Do not hallo till you are out of the wood.
未出險境，先莫高興。
I looked out of the window.It was dark outside.
我望望窗外，外面一片昏暗。