My first part was Captain O'Hagarty, a dastardly villain in a children's play.

我演的第一个角色是奥哈格蒂船长，一部儿童剧中的恶棍。

Who was involved in these dastardly deeds?

有谁参与这种龌龊事？

A hit-and-run driver is a dastardly person.

译肇事后逃跑的司机是怯懦的人。

They may have found some old dastardly plans.

调查人员找到了一些很久以前的卑鄙计划。

He described the killing as a dastardly act.

他把这起谋杀称为极其卑劣的行为。