But some, and this is interesting, move straight west while some zigzag or even move in large circles.
但是有趣的是，其中有一些会朝西直线移动，而另外的则会曲折前行，或者甚至绕着大圈子移动。
Without knowing it, they rowed in two large circles, When they finally got to the shore, they discovered that they were at the spot they had started from.
他们不知不觉地划了两个大圈。当他们终于靠岸时，发现又回到了出发的地方。
Without knowing it, they rowed in two large circles, When they finally got to the shore, they discovered that they were at the spot they had started from.
他们不知不觉地划了两个大圈。当他们终于靠岸时，发现又回到了出发的地方。
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