n. 男用无袖短上衣, 短上衣
n. a tight sleeveless and collarless jacket (often made of leather) worn by men in former times
1. Seems like you jerkin' off for a few months was a solid investment.
看起来你不得不自给自足的那几个月 是很赚的投资
2. You're jerkin' off with one hand, you're pumpin' quarters in the machine with the other.
你一手打着飞机 一手把硬币投进机器
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