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1·Stir and wash laundry up and down with stirring pulsator.

依靠搅拌翼搅拌，上下翻动洗衣。

2·The star was a high-amplitude pulsator until right before the observing run started, when it mysteriously became a small-amplitude pulsator.

直到观察之前该恒星还是一个高振幅震动器，接着它就谜一般地变成了小振幅震动器。