trainersn.运动鞋；便鞋；
shoesn.鞋；
例如These shoes should last you till next year.
His shoes were beginning to show signs of wear.
他那双鞋看样子快穿坏了。
These tennis shoes are designed for comfort and performance.
这些网球鞋的设计穿起来舒服，易于发挥成绩。
They were too poor to buy shoes for the kids.
他们穷得没钱给孩子买鞋穿。
