A weird thing which is discussed in the textbook is if you wait a while and then you try it again with the bell after a couple of hours, the saliva comes back.

教材中讨论了一件奇怪的事情,如果你稍等一会,在几个小时之后用铃声重新去尝试，狗会重新开始分泌唾液。

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It's so gentle, it sounds as if it's fading out from the minute it begins, but it's lovely enough that you can't wait for it to circle back around.

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We would wait for it to go back up.

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It is almost as if it is so exasperated by the flaky achievements of its previous anti-deflationary efforts that it would rather sit back and wait for a recovery.

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