However, it is free to move around side to side between the jetstreams.

然而，它可以在喷射流之间自由地左右移动。

PETER LANG-STANTON: At that point we barely knew about the jetstream.

彼得·朗-斯坦顿：那时我们对急流几乎一无所知。

This is because of the jetstreams above and below it, essentially sandwiching the spot in place.

这是因为它上方和下方的急流，基本上将斑点夹在适当的位置。