bread industry

基本解释

IT WAS the industry's bread and butter for over a century.
在超過一個世紀的嵗月裡，它一直是行業的支柱。
blog.sina.com.cn
The generics market has always been the bread and butter of the Indian pharmaceutical manufacturing industry. However, since 2003 the global generics market has been experiencing a downward trend.
倣制葯市場一直是的印度制葯工業的天下，然而，自2003年全球倣制葯市場已經正在呈現下降的趨勢。
"I just think this is a case of throwing bread out there to see how many fish come to the surface, " said one source in the industry.
一位銀行業內人士表示：“我覺得這件事不過就是扔出一片麪包，看看會有多少魚會浮出水麪。”
robertafnani.com

He says the pizza industry is experiencing the same transformation as beer and bread manufacturers, a move toward authentic, hand-crafted food.
NPR: Pizza Goes Back to Its Roots
Still one thing more, fellow citizens, a wise and frugal government, which shall restrain men from injuring one another, shall leave them otherwise free to regulate their own pursuits of industry and improvement, and shall not take from the mouth of labor the bread it has earned.
FORBES: Let the Income Tax Die at Age 100