a dime a dozen
固定说法，表示某物非常常见、毫不稀奇；主语通常是复数名词。
Cheap phone cases are a dime a dozen online.
便宜的手机壳在网上随处可见，不值钱。
一角硬币；十分硬币
六后卫防守阵型；十美元一小包的毒品；一种防守阵型,有六名防守后卫,其中一名是 dimeback；美国面值十分之一的硬币；售价十美元的非法毒品小包(街头用语)
一种防守阵型,有六名防守后卫,其中一名是 dimeback
A defensive formation with six defensive backs, one of whom is a dimeback.
美国面值十分之一的硬币
a United States coin worth one tenth of a dollar
售价十美元的非法毒品小包(街头用语)
street name for a packet of illegal drugs that is sold for ten dollars
I found a dime under the couch cushions while I was cleaning the living room.
我打扫客厅时在沙发垫下面找到了一枚一角硬币。
用法提示：dime 在此作名词，指美国面值十分之一的硬币，前面用不定冠词 a 表示一枚。
She paid for the coffee with two dimes and a nickel.
她用两枚一角硬币和一枚五分硬币付了咖啡钱。
用法提示：dime 在此作名词，用复数形式 dimes 表示多枚一角硬币，与 nickel 并列作付款的零钱。
This candy bar used to cost a dime, but now it costs a whole dollar.
这块糖以前只要一角钱，现在却要整整一美元。
用法提示：dime 在此作名词，用作价格的数量，说明某物值一角钱。
固定说法，表示某物非常常见、毫不稀奇；主语通常是复数名词。
Cheap phone cases are a dime a dozen online.
便宜的手机壳在网上随处可见，不值钱。
用于强调毫无价值，语气比 not worth much 更强。
His promise isn't worth a dime.
他的承诺一文不值。
常与 turn、stop 一类动词连用，形容动作又快又准。
This little bike can turn on a dime.
这辆小自行车能迅速急转。
grammar · medium
易错句子I found dime on the sidewalk.
正确表达I found a dime on the sidewalk.
dime 是可数名词，单数形式前必须用不定冠词 a/an；中文名词前没有冠词，所以容易漏掉。这里指“一枚一角硬币”，须说 a dime。
grammar · medium
易错句子She gave me two dime.
正确表达She gave me two dimes.
英语可数名词被大于一的数词修饰时要变复数；中文名词没有单复数变化，所以容易忘记加 -s。two 后面要用 dimes。
grammar · medium
易错句子A dime is worth five cents.
正确表达A dime is worth ten cents.
dime 指美国一角硬币，面值是十分（ten cents），不是五分；五分硬币是 nickel。不要把两个硬币名称的币值混在一起。
多得很，不值钱
Good ideas are a dime a dozen; execution is what matters.
好主意多得很，真正重要的是执行力。
一文不值
His promise isn't worth a dime.
他的承诺一文不值。
突然地；迅速地（急停、急转）
This small sports car can turn on a dime.
这辆小跑车能原地急转。
廉价杂货店
She bought the earrings at a dime store.
她在一家廉价杂货店买了这对耳环。
廉价通俗小说
He read dime novels all through his boyhood.
他整个少年时代都在读廉价通俗小说。
六后卫防守阵型
The coach sent in the dime defense on third and long.
在第三档长码数时，教练派上了六后卫防守阵型。
Choose the next layer that will help you use dime with more confidence.
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