Level off the shelves with a spirit level.

用酒精水平仪把架子弄平。

Authorities said hair dye containing lentine will be pulled off the shelves soon.

相表示，这些染发剂很快下架。

Did they buy the computer system off the shelf or was it designed specially for them?

这套计统是他们买的现成货还是专门为他们设计的？