At 3.7 lbs, the 13-inch X1 weighs eight ounces more than Apple’s 13-inch MacBook Air but eight ounces less than the 13-inch MacBook Pro.

一台13英寸的X1笔记本电脑重3.7磅，比相同大小的苹果MacBook Air重8盎司，但比同样大小的MacBook Pro轻8盎司。

youdao

For example, if you want an Apple laptop, you can choose between a MacBook, a MacBook Air, and MacBook Pro.

比如说，如果你想买一个苹果笔记本，你可以挑选MacBook MacBook Air，或者MacBookPro， 仅此三种选择，没有其他的了。

youdao

Every computer after that was an Apple: Mac SE, PowerBook 100, PowerBook G3, PowerBook G4, MacBook Pro and MacBook Air.

ENGADGET: This is the Modem World: How did this happen?

Apple has withdrawn all its laptop and desktop computers from the EPEAT environmental rating system, including older MacBook Pro and MacBook Air models.

ENGADGET: Apple pulls out of EPEAT green registration, may not be able to sell computers to federal agencies

In a column in Wired today, Wiens compares the new Macbook Pro to the Macbook Air, which sacrificed upgradeability and reparability in pursuit of thinness and sold millions as a result.

FORBES: Why The New Macbook Pro's Repair Problems Matter