It's very difficult to train it to peck to escape a situation.

训练鸽子通过叼啄,来脱离某种情境是很困难的。

耶鲁公开课 - 心理学导论课程节选

You can train it to flap its wings to escape a situation but it's very difficult to get it to flap its wings for food.

你可以训练鸽子,通过扇动翅膀来脱离某个情境,但却很难通过训练鸽子扇动翅膀来进食。

耶鲁公开课 - 心理学导论课程节选