He invests thirty hours max, and takes a fee of around fifteen thousand.

Clearly, he was not eager to invest more nonbillable hours in a hopeless cause.

He did not invest many hours on the practice court.

The trap: Show up at a new social network, invest two hours, be really aggressive with people, make some noise and then leave in disgust.

After investing so many hours in the Zeiss, can the technicians still muster any sense of wonder at the night sky?

Some families invested 16 hours a day in production.

On average, they'll invest only 4.6 hours a month evaluating their investment portfolios.

After the training, the tutors invest at least 50 hours a year to tutoring their student.

Few viewers with any respect for the value of time are likely to invest many hours on so unpromising a show.

I wonder why he didn't bother to invest three hours in advance, looking for a job worth doing?