Haitian authorities say they want donors to focus on creating jobs, because giving away food is disrupting the local economy.

VOA: standard.2010.03.22

When Pavlov put food powder in the dog's mouth and saliva was generated, that's an unconditioned stimulus giving rise to an unconditioned response.

巴甫洛夫给狗喂食,狗会分泌唾液，这就是无条件刺激引起了无条件反应。

耶鲁公开课 - 心理学导论课程节选

Let's say that your friend is giving you some food.

假设你的朋友总是会给你一点小零食。

That's all课堂 - SpeakingMax英语口语达人