They have two suckers, one at each end.
他们有两个吸孔,一在每个月底。
One at each end, ready to move in any direction.
一个在一头,随时可以从任何一个角度进入。
Usually there is one at each end of a stadium with a large TV screen.
通常在体育馆的四边都会有大型的电视屏幕。
Once each time. Right? I only do one swap potentially, it-- though not one potentially, each time at the end of the loop I do a swap.
每次循环做一次,对么?我其实,就可能做了一次交换,也许并不是可能,每次循环的结束我都得做一次交换。
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