My glasses were a cheap over-the-counter pair and my hair a tangle mop, no matter what I did.
我的眼镜很普通，头发乱糟糟一团，不论我怎么梳理都弄不好。
Or you can buy a pair of hinges only (about $33 plus shipping) and make your own wooden rack to hold knives, spices or other small items that take up counter space.
你也可以只买一对铰链（包括运费大约33美元）自己动手做木架子，用它来收纳刀具、调料以及其它占用灶台空间的小家什。
Before he left the shoes counter, he asked the salesgirl: "How long will this pair of shoes last?"
他在离开柜台之前，问售货员：“这双鞋能穿多长时间？”
For your lower-mileage runs, buy a pair of stability shoes and add a rigid over-the-counter orthotic.
在短距离跑步中，你可以买一双稳定型跑鞋，并垫上刚性的鞋垫。
Music and audience is a set pair with particular meanings. The art of music has the similarities, differences and counter features.
音乐与听众是有特定意义的一个集合对，音乐的艺术性具有同异反特征。
A man rushed to the jewelry counter in the store where I work soon after the doors opened one morning and said he needed a pair of diamond earrings.
在一天早晨，我上班的商店开门不久，一位男子冲到商店内珠宝柜台前，称自己要一对钻石耳环。
In the experiment, a simplified aircraft model (with tail wing) is employed to construct a 4-vortex wake system consisting of a pair of tip vortices and a pair of counter rotating tail plane vortices.
试验采用简化的飞机模型(有尾翼)，建立了包含一对翼尖涡及一对反向旋转的尾翼涡(通过以负迎角安装尾翼得到)的4涡尾流系统。
In the experiment, a simplified aircraft model (with tail wing) is employed to construct a 4-vortex wake system consisting of a pair of tip vortices and a pair of counter rotating tail plane vortices.
试验采用简化的飞机模型(有尾翼)，建立了包含一对翼尖涡及一对反向旋转的尾翼涡(通过以负迎角安装尾翼得到)的4涡尾流系统。
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