1、He was known as an actionist who tirelessly fought for social justice.
他被称为一个不知疲倦地为社会正义而奋斗的行动主义者。
2、The actionist organized protests and demonstrations to raise awareness about environmental issues.
这位活动家组织了抗议活动和示威活动，以提高人们对环境问题的意识。