Unexpectedly, he misses his step and falls into the trap.
3
依然穿着音乐会演奏穿的平底鞋,我一脚踩空,摔了个仰巴丫,琴盒成了我的雪橇。
Still wearing my flat-soled concert shoes, I lost my footing and took the entire flight on my back in classic slapstick fashion, riding the violin case like a sledge.