brand x 品牌X

a marketing classification describing a product that doesn‘t have a highly visibleorrecognized name like a well-known productorbrand name

EXAMPLE:

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

bread and butter 生计

the primaryorleading means of financial support， existence，orsurvival

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.

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.