boot是可数名词;
bootn.靴子;(汽车后部的)行李箱;猛踢;
v.猛踢;装入操作系统;启动(计算机)
The ski had become disconnected from the boot.
滑雪板与靴子脱离了。
Your boots are covered in mud.
你的靴子上都是泥。
The skis should detach from the boot if you fall.
要是你跌倒了,滑雪板就该脱离靴子。
水利万物而不争,
而万物莫能与之争。