Why some people choose to act altruistically is unclear, says lead study investigator Dharol Tankersley, a graduate student in Huettel's laboratory.

為什么一些人會(huì)選擇利他行為目前并不清楚。

I am not concerned here with the psychology of motives. I am not going to argue about whether people who behave altruistically are "really" doing it for secret or subconscious selfish motives.

這里我的旨趣不在動(dòng)機(jī)的心理學(xué)方面，我不準(zhǔn)備去論證人們?cè)谧龀隼袨闀r(shí)，是否“真的”私下或下意識(shí)地抱有自私的動(dòng)機(jī)。

But he found that systematically, no matter what, there's a significant number of people who do behave altruistically, no matter what.

但他發(fā)現(xiàn)，整體來(lái)看，無(wú)論如何，有大量的人會(huì)表現(xiàn)出利他的行為，無(wú)論如何。

The researchers also did brain scans of those who behaved most altruistically, before and after training.

在訓(xùn)練前后，研究人員分別掃描了那些表現(xiàn)得最無(wú)私的受試者的大腦。

Debate is also intense over whether women should be paid for their milk or donate it altruistically.

對(duì)于女人是否應(yīng)當(dāng)出售人乳，抑或應(yīng)當(dāng)無(wú)私地捐贈(zèng)出去，也存在激烈的爭(zhēng)論。

An unexpectedly large fraction of players acted altruistically to protect their weaker friends.

遠(yuǎn)遠(yuǎn)超出人們的預(yù)料,有很大一部分玩家在游戲中無(wú)私地保護(hù)那些弱者朋友.

Gymnosophists should do good, serves the needy masses altruistically, and then he can become a Buddha.

修行者要廣做善事，普渡眾生，才干成佛。