altruistic act

the selfless act of egg-giving is a very altruistic act, but we can't ignore the fact that it carries risks.

无私捐献卵子是一种利他行为，但是我们不能忽视带有危险成分的事实。

Bands of altruistic humans would then act together to gain resources from other groups at this challenging time in history.

波段的利他主义的人，然后一起采取行动，以获得资源从其他团体在这一具有挑战性的历史时刻。

This altruistic act gives an inkling of what could be done if the lottery was harnessed for charitable and social welfare projects.

依法一：这种义举给了人们一种暗示&如果将彩票用于慈善和社会福利事业，人们可以做些什么。

And they're altruistic because they act to preserve other animals that share the same genes.

说它们利他，是因为它们会保护其他动物，和它们有同样基因的动物。

people like to congratulate themselves when they commit a selfless, altruistic act, like donating to charity or helping a stranger in need.

人们喜欢在自己做了无私的奉献之后表扬一下自己，例如向慈善机构捐款，帮助一个困难中的陌生人。