a pair of

• A torque of this kind, arising from a pair of equal and opposite forces, is sometimes called a couple .
  由一对相等而相反的力产生的这类转矩，有时叫做力偶。
• A pair of stage twins, who turned out to be the girls in yellow, did a baby act in costume .
  一对双胞胎原来就是那两个黄衣姑娘演了一出化装的娃娃戏。
• "now fire away," he said, when he had got his guest into a shirt and a pair of duck trousers .
  他给客人穿好衬衫和帆布裤，说：“现在，请你开诚布公地讲吧！”
• Your daughter will be eighteen years old, your constant companion and a pair of watchful eyes on all you do .
  你女儿18岁，已经是你的伴侣，会刺探你的秘密了。
• A pair of capacitive rings attached to the respective pole piece is used to detect movement of the coil .
  两个分别附在各自极靴上的电容环被用来探测线圈的运动。
• His dress consisted of a large high-crowned hat, a worn dark suit, a pair of capacious shoes .
  他的装束包括一顶大尖帽，一套穿旧了的深色衣服，一双容积很大的鞋子。
• In nuclear fusion, a pair of light nuclei unite (or fuse) together, form a nucleus of a heavier atom .
  在核聚变的情况下，一对轻核合并（或聚合）在一起，形成一个较重的原子核。
• Madge then stripped off the coarse ordinary shoes which she wore, and replaced them by a pair of dirty satin ones .
  接着，玛古又脱掉那双家常穿的粗布鞋，换上一双肮脏的锻子鞋。
• In two weeks' time it will be a pair of nice, shiny rib shears that will simply sing through the ribs .
  在两星期之内它就要变成一把可爱的、亮晶晶的肋骨剪，剪起肋骨来非常精彩。
• A pair of drums is used, and the signals are transformed successively from one to the other as the summation proceeds .
  采用双鼓，信号不断从一个鼓传递到另一个鼓就如相加的过程。