His head sank down AD he fell asleep.

他睡着时头垂了下来。

youdao

If you have stairs in your house, walk up and down the stairs a few times, during each AD break for at least one show every day.

如果你的屋子有楼梯，每天至少在一个电视剧间隙或广告时间，上下楼梯几次。

youdao

Britons took the porkers to their hearts after seeing them charge down a runway and take off to the theme tune from the film "633 Squadron" in an ad for Zurich Financial Services.

这条广告是苏里兹财务服务公司的广告片，在片子里，伴随着电影《633空军中队》主题音乐，小猪们沿着跑道加速快跑，最后飞了起来。 它们因此俘获了英国人的心。

youdao

Ad sales have always gone up and down with the economy.

VOA: special.2009.03.21

But smaller screen sizes than PCs, less sophisticated ad targeting and wariness by advertisers is holding down ad rates or spending on mobile devices.

WSJ: Twitter's Mobile Ads Begin to Click

Typically accountability for effectiveness has pushed down ad prices.

FORBES: Winners & Losers In Google TV

In the end, the winners may prove to be online advertisers, who will see the potential for resulting stronger competition for Google to drive down ad rates and provide new advertising services.

FORBES: A Messy Marriage