A wordis valid if and only if each ordered pair of adjacent letters inthe word is a valid pair.

牛语的单词是由字母组成的序列，一个单词是有意义的充要条件是任意相邻的字母都是合法的词素。

Since then, she has ordered another pair of shoes and a pair of boots.

从那时起，她又定做了一双鞋与一双靴子。

When Tyler Galganski ordered himself a pair of one-piece pajamas in early 2009, he was disappointed with the quality.

2009年年初，Tyler Galganski为自己订购了两条一体睡衣裤，但他对产品的质量颇感失望。

My father ordered a pair of shoes for me.

爸爸为我订购了一双鞋。

Crowe doss once again fly into a rage, he ordered the soldiers stormed into the temple, dragged from a pair of being held wedding couple side will be Valentine, into a dungeon.

克劳·多斯又一次暴跳如雷，他命令士兵们冲进神庙，将瓦沦丁从一对正在举行婚礼的新人身旁拖走，投入地牢。