double-pole single throw 双刀单掷开关
double pole single-throw switch 双刀单投开关
single pole single throw 单极闸刀开关 ; 单极单投
Double pole single way switch 双极单刀开关
single pole single throw switch 单刀单投开关
single-pole single-throw 单刀单掷 ; 单极单投 ; 单刀单掷开关 ; 单刀单投
three-pole single-throw switch 三刀单掷开关 ; 三刀单投开关
Even then, a single atom often behaves as a magnet, but always with both a North and South pole, and you can't cut it any finer.
即便是这时，一个单原子总是表现得像一个磁体，但它仍然有南北两极，而你已经不能再细分下去了。
The second is that America's role as the single pole of a unipolar world is inevitably coming to an end.
第二种变化在于，美国所扮演的单极世界中唯一一极的角色正在不可避免地走向终结。
When they reached the Valley of Eshcol, they cut off a branch bearing a single cluster of grapes. Two of them carried it on a pole between them, along with some pomegranates and figs.
他们到了以实各谷，从那里砍了葡萄树的一枝，上头有一挂葡萄，两个人用杠抬着，又带了些石榴和无花果来。
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