(1) 'If I had a nickel for every time that happened, I would be rich.如果每次那種事發生,我會得一個硬幣,那我會有很多錢。 IF I HAD A NICKEL FOR EVERY TIME – When someone uses this expression, they mean that the specific thing happens a lot(那種特定的事情常常發生。). It is an abbreviation of the statement ‘If I had a nickel for every time that happened, I would be rich’
(2)
If I had a nickel for every time I heard that, I'd be a naked man. 每次得知我只得一個硬幣,我總會感到赤裸裸般的。每次得知我沒錢,我總會感到沒安全感。If : 每次...的時候(總會)e.g.If I feel any doubt, I inquire. 每次我感到有疑問,我總會隨時詢問。Hear : 得知[W][+(that)e.g.I heard that he was ill. 我得知他病了。Naked :裸體的, 光身的[Z]e.g.The boy was naked to the waist. 男孩光著上身。 nickel : U.S. one-cent coin[very small amounts of money] [For those not familiar with US coinage; a quarter is 25 cents, a dime is 10 cents and a nickel is 5 cents.]nickel 1755, coined in 1754 by Swed. mineralogist Axel von Cronstedt (1722-65) from shortening of Swed. kopparnickel "copper-colored ore" (from which it was first obtained), a half-translation of Ger. Kupfernickel, lit. "copper demon," from Kupfer (see copper) + Nickel "demon, goblin, rascal" (a pet form of masc. proper name Nikolaus, cf. Eng. Old Nick "the devil;" see Nicholas); the ore so called by miners because it looked like copper but yielded none. Meaning "coin made partly of nickel" is from 1857, when the U.S. introduced one-cent coins made of nickel to replace the old bulky copper pennies. Application to five-cent piece (originally one part nickel, three parts copper) is from 1883, Amer.Eng.; in earlier use were silver half-dimes . To nickel-and-dime (someone) is from 1970 ( nickels and dimes "very small amounts of money" is attested from 1893).
http://www.phrases.org.uk/meanings/260800.html