置之度外

置之度外 [zhì zhī dù wài]

1. ■ leave [put] out of consideration [one's calculation; account]; not to take into consideration [account]; have no regard for; think nothing of it; cast out of one's mind; disregard entirely; give no thought to; have no regard to:

革命先烈为了革命事业把生死置之度外。 For the revolutionary cause many martyrs left life and death out of consideration.

他为了抢救落水儿童， 把个人安危置之度外。 He went to the rescue of a drowning child regardless of his personal safety.; He ventured his life to save a child from drowning.

别的事情， 他都置之度外了。 Nothing else mattered him now.