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1·It sells for eight dollars per pair.

这个每双八美元。

2·Per pair of shoes can be for vamps , can be picked in the shop.

每双鞋子的鞋面都可换，在店内可以挑）。

3·Company A currently produces and sells tennis shoes at the unit price $60 per pair.

公司A是一家生产并销售网球鞋的企业。其网球鞋现在的出售单价是60美元。

4·They offer $2.85 per pair of jeans for a package of a dozen, when the reasonable price is $7.

只有一打的牛仔裤订单，每件出价为2.85美元，而合理价格应为7美元。” 该公司基于华南，向欧洲和美国出口牛仔裤。

5·Shoes can be hired in changing room for 10 dollars per pair, and clubs can be hired in addy master for 20 dollars per set.

球鞋在更衣室可以租到，10美元一双；租球杆请到出发台，20美元一套。

6·400 miles per pair of shoes is a good rule of thumb, but you should track the mileage on each pair of shoes and find a number that works for you.

每400英里换一双是一个很好的经验法则，但你应该记录每双鞋所跑过的里程，以选一双最适合你的鞋。

7·Offering a weight saving of 9.5 grams per pair over the stock versions, they are made from high grade 7075 aluminium and have 2 additional pin mounting positions to use when the original gets worn.

提供一个重量节省九点五克每双版本的股票，它们是由高品位7075铝和有2个额外的引脚安装位置时要使用原来的被磨损。

8·In the study, the scientists also washed jeans to see how many bits of denim each pair would drop per wash.

在这项研究中，科学家们还洗了牛仔裤，看看每洗一次牛仔裤会掉下多少块牛仔布。

9·At that speed, HM Cancri is the fastest binary star pair ever discovered, with each White Dwarf circling the other at a speed of 310 miles per second.

双星HM Cancri是迄今为止所发现的运行最快的双星，它们是一对白矮星，其中一个围绕着另一个运转的速度是每秒310英里。

10·The cost of sequencing DNA has fallen from about $1 per base pair in the mid-1990s to a tenth of a cent today, and the cost of synthesising the molecule has also fallen.

DNA序列重排的成本在90年代中期是每个碱基对一美元，而现在的价钱是当时的十分之一，而且人工合成分子的成本也大大降低。