altruism

Many people donated blood out of pure altruism during the emergency.

(Chinese) 在紧急情况下，许多人纯粹出于利他主义捐血。

The scientist's life was a testament to his altruism and dedication to public health.

(Chinese) 这位科学家的生平证明了他的利他主义和对公共卫生的奉献。