您要查找的是不是：
- The child was sitting on the bottom stair. 那孩子正坐在楼梯最下面的一级上。
- There are two breakers in this circuit. 这个电路里面使用了两个断路器。
- A replaceable printed circuit board. 一种可替换的印制电路板。
- The stair carpet gets a lot of wear and tear and will soon need replacing. 铺在楼梯上的地毯磨损得很厉害，因而很快就要更换。
- The circuit of the city walls is three miles. 环绕本市城墙的周长是三英里。
- There must be a break in the circuit. 电路中一定有断路。
- A short circuit will blow the fuse. 短路会烧断保险丝的。
- A short circuit put the machine out of action. 短路使机器停转。
- stairing circuit 阶梯电路
- The switches close the contacts and complete the circuit. 这些开关可使接触器接通电流形成回路。
- Footsteps shuffled on the stair. 楼梯上拖曳着脚步的声响。
- Clutch stair armrest, move carefully step by step. 抓紧楼梯扶手，一步步谨慎地移动。
- He was in agony when he descended a crowded stair. 最使他急得无法可施的是在人丛中走下楼的时候。
- Equipped with stair and doods elerator. 提升机有电动葫芦型和液压升降平台型。
- He heard soft footsteps coming up the stair. 他听见有人上楼的轻微脚步声。
- Don't connect up the two wires, or there will be a short circuit. 不要把这两条电线接在一起，否则会短路的。
- The rocket did one circuit of the earth and returned to base. 火箭绕地球运行一周后返回基地。
- All rising to great place is by a winding stair. 凡取得成功的人都走过一段艰难曲折的道路.
- Hark! I hear a step on the stair! 听！我听见楼梯上有脚步声！
- The earth takes a year to make a circuit of (ie go round) the sun. 地球绕太阳一周需要一年时间。
