She had learned to walk, and to talk, and to feed herself and tie her bootlaces . 她学会了走步、说话、吃饭和系鞋带。
2.
Four bootlaces for a penny “靴子带儿，一便士四根。 ”
3.
At the beginning of 20 century , midi boots with bootlace were becoming prevalent in us . whitcomb judson , a retired fat football player had to spend much time in putting on his boots every morning . to ease the laborious work , he managed to invent a zip - fastener , which allowed him to put on his shoes just in a few seconds . this is the naissance of zipper in the world 拉链的发明可追溯到19世纪末20世纪初，有位美国退休的足球运动员贾德森，他是个头脑聪明的大胖子。那时流行穿绑鞋带的中长筒皮靴。这对他那双大脚来说实在是一件不容易的事，每天早晨他总是费了很大的功夫，才完成穿鞋的"壮举" 。
