Admittedly , a college education demands pretty hefty costs upfront .

无可否认，大学教育需要提前支付大笔成本。

The impossibility of depreciation causes labor unions to moderate their demands . "

因为无法进行本币贬值，所以工会不得不克制要求。”

Each social network demands your full and undivided attention .

每个社交网络都需要你全神贯注的投入。

The economy demands increased consumer spending .

经济形势要求增加消费支出。

The survival instinct demands it .

这是生存本能的需要。