brand x 品牌X

　　a marketing classification describing a product that doesn't have a highly visible or recognized name like a well-known product or "brand name"

　　EXAMPLE:

　　It was decided to buy brand x because it was less expensive.

　　bread and butter 生计

　　the primary or leading means of financial support, existence, or survival

　　EXAMPLE:

　　Bicycle manufacturing provides the company's bread and butter.

　　hindsight 后见之明, 事后聪明

　　Being able to see has already happened; as contrasted with being able to see what will happen in the future. (HUMOROUS, USUALLY SARCASTIC)

　　EXAMPLE:

　　“When my pompous brother-in-law told me all the business mistakes I made last year, I complimented him on his 20/20 hindsight.”

　　24/7

　　Reference to any business service that is offered 24 hours a day, 7 days a week

　　EXAMPLE:

　　“Most web hosting companies provide 24/7 technical support to their clients, so clients can be confident that any emergency at any time can be handled promptly.”