Or they assume that it will require a steady, constant effort over years.

FORBES

When the parties were here earlier in the year, we said this was going to require constant attention and constant effort.

WHITEHOUSE: Press Briefing

And because of high rates of attrition (casualties and retirement, but mainly protracted absence without leave), just maintaining those numbers requires constant effort.

ECONOMIST: The war in Afghanistan

Mills makes what she calls "a conscious and constant effort" to educate prospective guests of the services her concierge team can provide in hopes of making their stay more fulfilling.

FORBES: Business Travel

At Nikon's booth, Japanese dancers clad in a variety of "urban" dress, remained in constant motion in an effort to demonstrate the autofocus abilities of the company's latest 1 Series cameras.

ENGADGET: CP+ 2013 wrap-up: brochure models, Japanese dancers and point-and-shoots aplenty