https://online2.tingclass.net/lesson/shi0529/0009/9907/294.mp3
https://image.tingclass.net/statics/js/2012
讲解文本：
spotless 无灰尘的，干净清洁的，一尘不染的
I like this room, it's always spotless.
我喜欢这个房间，一直是干干净净的。
Every morning cleaners make sure everything is spotless
每天早晨，清洁工们会把一切都打扫得干干净净。
疯狂练习吧!
