您要查找的是不是：
- three prong plug 三插头
- As a result, your tool is equipped with a two prong plug which permits you to use extension cords without concern for maintaining a ground connection. 这样一来，机器使用两相插头，使用延长线缆时也就不用考虑接地问题。
- When an electric appliance has a plug with three prongs, one of the prongs acts as the ground, or 0 volts. 当电气设备使用三只脚的插头，其中一脚之作用为接地，或0伏特。
- At the same time, they would set up a nuke at another of the enemy’s expansion.They could plan all this out to occur at the same time to overwhelm the enemy with a three pronged attack. 新增加的操作系统会让玩家比往常任何时候都更容易调动自己的部队，同时简化能让玩家更容易、更有效率地暴兵，而星际争霸：母巢之战则从不可能做到。
- He trudge three hour in the snow to get back home. 他在雪中跋涉三个钟点才回到家。
- Our family reunions are always three ring circus. 我家合家团聚的场面总是热闹非凡。
- The train arrived on the dot of three o'clock. 那辆火车三点钟准时到达。
- Her family lives three li away from her school. 她家住在离学校有三里路的地方。
- We spied three figures in the distance. 我们望见远处有三个人影儿。
- The earthwork was cast up in three hours. 土方工程在三小时内就完成了。
- It's three blocks straight ahead. 一直往前走过三个街区就是。
- The investigator will be divided into three groups. 所有的调查员将被分为三个小组。
- Three people can sit in the back of this car. 这车的后座可坐3个人。
- I did the calculation by the rule of three. 我是根据比例运算法则计算出来的。
- He is on night duty three days a week. 他一个星期要上三天夜班。
- He knocked back three pints of beer in ten minutes. 他在10分钟里喝了3品脱啤酒。
- It's three years to the day since we met. 我们整整三年没见面了。
- I will make you learn driving in three days. 我将使你在三天之内学会开车。
- The car is three years old and still unpaid for. 这汽车用了三年还没付购车款呢。
- The cipher took me three weeks before I hit it. 我费了3个多星期才把这密码解释出来。
