This is a way of introducing cytotoxicity or cell killing ability into a cell, and that's been used to treat many kinds of cancers, particularly cancers of the brain.

这种方法常用来导入细胞毒素,或者赋予细胞杀伤其他细胞的能力,以治疗多种癌症,特别是脑癌

耶鲁公开课 - 生物医学工程探索课程节选

And that's a lot of what they did.

这也是行为主义者的常用研究方法。

耶鲁公开课 - 心理学导论课程节选