This is because seizures can reoccur if medications are stopped.

这是因为停止用药，癫痫可能会再次发作。

So basically, an extended metaphor is a theme that reoccurs throughout the poem.

所以基本上，延伸隐喻是贯穿整首诗的主题。

As well as the imagery pay attention to the symbolism and try and notice some of the themes that reoccur in this poem.

除了意象，还要注意象征主义，并试着注意一些在这首诗再次出现的主题。

Those chords, which reoccur throughout the opera, serve another purpose.

这些在整部反复出现的和弦，还有一个作用。

" If you take patients who have recovered from depression and you deplete their brains of tryptophan, their depression will reoccur within a really short period of time, within minutes to hours" .

“你让抑郁症康复的病人耗尽他们大脑的色氨酸，他们的抑郁症会在很短的时间内再次出现， 在几分钟到几小时内” 。

But there's this image that does reoccur throughout that of this dog, this kind of dead dog, and this this idea of something dying on your doorstep.

但有一个画面反复出现， 就是那只狗，一只好像已经死掉的狗， 还有那种东西死在你家门口的想法。

After T-cells have performed their search and destroy mission, the body keeps a few of them in reserve, in case the same infection reoccurs.

在T细胞完成其搜寻与消灭任务后，身体会保留一些作为储备，以防相同的感染再次发生。

The geological record provides these warnings that reoccur every 100 million years or so, showing why you don't mess with this stuff too much.

地质记录提供了这些反复出现的警示，大约每1亿年就会重演一次，说明你最好不要过度干预这类事物。

But repeating that accomplishment is often not realistic, which can lead to severe negative emotional consequences when it doesn't reoccur.

但是重复这种成就通常是不现实的，当它不再发生时，会导致严重的负面情绪后。

Well, we have requested the Greek authorities to take all the appropriate measures so such mistakes do not reoccur.

我们已经要求希腊政府采取所有适当措施，避免这种错误再次发生。