在训练阶段，每只狗只看到人脸的上半部分或下半部分。

During the training stage, each dog was shown only the upper half or the lower half of the person's face.

youdao

这只狗只在喂食的时候叫吗？

Does the dog barks only at feeding time?

youdao

窗子打开了，冷不防一只狗探出头来。

The window opened and a dog's head popped out.

《牛津词典》

And it turns out that the dog— when they zapped part of its brain, its leg would kick up.

结果是那只狗,当研究者们电击某个大脑区域时,狗的四肢便会乱踢起来

耶鲁公开课 - 心理学导论课程节选

I always remember having a lot of fun with the dog over here.

我总会想起自己和那只狗在这里度过的美好时光。

911事件的影响 - SpeakingMax英语口语达人

for why you became afraid of dogs is that one day a dog came up and he was a neutral stimulus.

你之所以害怕狗,是因为，某天有只狗向你跑来,狗是一个中性刺激。

耶鲁公开课 - 心理学导论课程节选