Then the scientists threaded the rope so that it would take two elephants, pulling both ends at the same time, to move the table. If one yanked an end without its helpmate doing so, no reward.

之后，科学家们穿开绳子，这样就需要两头大象同时拉绳子的末端来移动桌子，如果猛拉其中一端而帮友没有这么做，将不能获得食物。

youdao

Pulling the single rope would produce the identical food reward, but only with the help of another child or chimp in the room next door, who had to pull the opposite end of the rope at the same time.

只有在另一个孩子或者猩猩的帮助下，同时朝着绳子反方向的一端拉，才能得到相同的食物。

youdao

A church bell usually resides in a steeple and the exercise involved has to do with repeatedly pulling on a rope.

教堂的钟通常放在一个尖顶中，需要做的劳动就是要重复不停的拉绳子。

youdao

"They act like Lebanon is a rope and each is pulling the rope towards himself - and Lebanon is in the middle, " she adds.

BBC: Lebanese sceptical over unity talks