a lead

• Many transistors are smaller than the eraser on the end of a lead pencil .
  很多晶体管都比铅笔头上的橡皮还要小。
• She was intended to play a leading role in the growing might of sweden .
  她目的是要在不断增长的瑞典威力中起主要作用。
• He immediately took a leading role in the planning of their small cars .
  他立即在设计他们的小型汽车的工作中起了主要作用。
• A lead plate crosses the chamber and evidently the particle has passed through it .
  一块铝板横放在云室中，显然有粒子穿过铅板。
• Some recent accelerographs employ a lead dioxide rechargeable battery .
  有些新型的自记加速仪使用了一种可以重复充电的二氧化铝电池。
• He was once a leading figure in the community , but now he has become a figure of fun .
  他原是该社区的头面人物，但现在成了人们取笑的对象。
• Then a leading singer would stand out and recite alone, and the chorus would respond .
  后来，一个领唱的歌手站了出来，独自吟诵，合唱队跟他应唱。
• If she made a leading statement, he was expert deflecting her into more impersonal channels .
  只要她一开口，他就会巧妙地把她的话题转到与个人无关的问题上去。
• The monetary authorities are seen here as playing a lagging rather than a leading role in the inflationary process .
  在通货膨胀的过程中，金融当局起了一种延退作用而不是主要作用。