And to ask for these directly, various departments of the federal government launched ad campaigns that urged -- sometimes scared -- people to contribute to the war effort.
为了达到这样的目的，各科部门开办广告活动，然而这些活动有时候让人们害怕。 它力劝人们为战争贡献力量。
Sometimes money — a share of the profits or AD revenue they can get for their app in an app store.
有时候，会因为钱——他们从应用程序商店获得的利润分享或广告收入。
A banner AD at a site I sometimes visit reads "You are the 1,000,000th visitor!"
在我偶尔访问的一个站点上有这样一条横幅广告：“您是第1,000,000个访问者！”
Sometimes, an AD can make you impetuously buy something you don't need at all.
有时，广告会引导你去买你根本不需要的东西。
Sometimes, an AD can make you impetuously buy something you don't need at all.
有时，广告会引导你去买你根本不需要的东西。
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