记忆方法
双解例句
小知识
A safety is a device that helps keep you from doing bad things, like the safety on a gun that prevents you from pulling the trigger accidentally.
Safety, besides meaning “the state of being safe,” is used for things that promote safety. If you designate a special meeting place in case of emergency, that place is a safety. If you use contraception during sex, that's also a safety, to prevent pregnancy. In football it's a safety if a player is tackled behind his own goal line. And if you hit the baseball in a way to ensure you reach the base, that's called a safety too.
实用短语
常用短语
单词用法
这两个词的共同意思是“安全”。其区别是：
safety有“事到临头，消极逃避以免受害”的意味；
而security则有“积极防范以保证不受害”的意味。
例如：The Smiths are living in peace and security.史密斯一家过着平静安稳的生活。
safety多用作不可数名词，常用于in safety或with safety短语中。
词根词缀
后缀: -ty
表名词,用在形容词后,表示”特性,性质等”
n.
certainty 必然,肯定;必然的事certain肯定的+ty特性,性质等→n.必然,肯定;必然的事
cruelty 残酷;残酷行为cruel残酷的+ty特性,性质等→n.残酷;残酷行为
entirety 全部,完全entire全部的,完整的+ty特性,性质等→n.全部,完全
frailty 虚弱,脆弱,意志薄弱,过失frail脆弱的+ty特性,性质等→n.虚弱,脆弱,意志薄弱,过失
novelty 新颖,新奇,新鲜,新奇的事物novel新奇的,新颖的+ty特性,性质等→n.新颖,新奇,新鲜,新奇的事物
safety 安全,保险;安全设备,保险装置safe安全的+ty特性,性质等→n.安全,保险;安全设备,保险装置
specialty 专业,专长special特别的+ty特性,性质等→n.专业,专长
同义词
anchorage / harmlessness / reliability / refuge / immunity / invalnerability / harbor / safe / safeness / baven / secureness / clear / dependability / security / innocuousness / snug / reputability / sailing / shelter / protection / sanctuary
同根词
词根：safe
adj.safe安全的；可靠的；平安的
adv.safely安全地
n.safe保险箱；冷藏室；纱橱
safekeeping安全保护，妥善保管
safecracker保险箱窃贼
safeness安全；平安；保险
v.safekeeping保护（safekeep的ing形式）