Before the Spring Festival, every family would clean their houses from top to bottom.

春节前，家家户户都会彻底打扫房屋。

youdao

She would clean the house from top to bottom.

她会彻底地打扫房子。

《柯林斯英汉双解大词典》

Structurally, the website shows a clean hierarchical importance from top to bottom and left to right.

从结构上看，整个站点显示了一种干净的结构，从上到下，从左到右。

youdao

They clean the bottom of a boat.

VOA: special.2010.05.16

We were also impressed with the incredibly clean bottom panel which, while incredibly difficult to photograph, does hide the required pile of stickers and licensed keys that usually pollute the laptop's exterior.

ENGADGET: Lenovo's ThinkPad T430u Ultrabook hands-on Hands-on

Sludge settles to the bottom, leaving clean water on top.

FORBES: Muckraker

They should pass a series of focused, clean bills that have real bottom line impact for the government and consequently every American defined in dollars and cents.

FORBES: Move up http://i.forbesimg.com t Move down