A pair of oxen, yoked together, was used.
把两头牛用轭套在一起使唤。
He wore old jeans and a pair of sneakers.
他穿一条旧牛仔裤，脚蹬运动鞋。
The mechanic was wearing a pair of blue overalls.
机修工穿着一件蓝色工装连衣裤。
She clamped a pair of headphones over her ears.
她把一副耳机戴在两边耳朵上。
Go out and buy a pair of glasses, and charge it to us
去买副眼镜，账记在我们头上。