They were engaged in arbor culture; they had fruit trees that produced very well.

他们擅长园艺,他们栽种着大量果树并且产量丰富

耶鲁公开课 - 古希腊历史简介课程节选

Piaget had a rich theoretical framework, pulling together all sorts of observations in different ways, wrote many, many books and articles and articulated his theory very richly.

通过将各种观察结果,以不同的方式组合在一起,皮亚杰的理论内容变得十分丰富,他写了大量的书籍和论文,丰富了他的理论

耶鲁公开课 - 心理学导论课程节选