These words all mean to prevent sb/sth from dying, losing sth, being harmed or embarrassed. 以上各词均含拯救、挽救、营救之义。

• save to prevent sb/sth from dying, being harmed or destroyed or losing sth 指救、救助、挽救、拯救：◆Doctors were unable to save him. 医生未能把他救活。◆a campaign to save the panda from extinction 一场拯救大熊猫免于灭绝的运动
• rescue to save sb/sth from a dangerous or harmful situation 指营救、援救、抢救：◆They were rescued by a passing cruise ship. 他们被一艘经过的游轮救起。
• bail sb out to rescue sb/sth from a difficult situation, especially by providing money 尤指资助某人脱离困境：◆Don't expect me to bail you out if it all goes wrong. 如果一切都搞砸了，就别指望我来解救你。
• redeem (formal, religion 宗教) to save sb from the power of evil 指拯救、救赎：◆He was a sinner, redeemed by the grace of God. 他是一个罪人，承蒙上主的恩宠才获得救赎。 NOTE Redeem is also used in non-religious language in the phrase redeem a situation, which means to prevent a situation from being as bad as it might be. * redeem 亦用于非宗教语言中，如 redeem a situation 意为力挽狂澜。

Patterns

• to save/rescue/redeem sb/sth from sth
• to save/rescue/redeem a situation
• to save/redeem sinners/mankind
• to rescue sb/bail sb out financially