bad apple

基本解释

"He truly was the bad apple that spoiled the barrel, " Felps said.
Felps：“他的確是燬了一桶好蘋果的那顆壞蘋果。”
One "bad apple" can spread negative behaviour like a virus to bring down officemates or destroy a good team, according to a new study examining conflict in the workplace.
一項針對辦公室矛盾的調查顯示，某個人的壞行爲能像病毒一樣傳播感染，最終帶壞同事或者破壞一個好團隊。
If a bad apple slips through screening(3) in the hiring process, he or she should be placed to work alone as much as possible, the study's lead author, William Felps, said.
本研究主要作者William Felps說如果一顆壞蘋果霤進公司招聘榜，他或者她應該盡量被安排獨立工作。

BigSmart says Lamont is just a bad apple--the same line it used with Fournier in Maine.
FORBES: Con.com
Apple without Steve Jobs in the past has been just a bad apple core.
FORBES: Why Steve Jobs Wouldn't Care About Being Called Stingy or Having Gender Bias
The Osmonds recorded Jackson's "One Bad Apple" in 1970, taking it to No. 1.
NPR: Rock And Soul Songwriter George Jackson Dies At 68