It demands physical endurance and patience.

Professional fashion models are particularly vulnerable to eating disorders resulting from occupational demands to maintain extreme thinness.

So you feel he's been making unrealistic demands on you?

This level of wastage is a tragedy that cannot continue if we are to succeed in the challenge of sustainably meeting our future food demands.

The challenge is that an increase in animal-based production will require more land and resources, as livestock (牲畜)farming demands extensive land use

Our society depends on them being able to make critical decisions about their own medical treatment say, or what we must do about global energy needs and demands.

Perlow calls this vicious cycle the "cycle of responsiveness": Once bosses and colleagues experience an employee's increased responsiveness, they increase their demands on the employee's time.

Smart basketball players or skilled musicians need to pay close attention to the demands of high performance, to the challenges to be overcome.

Complete mastery demands continued learning until the age of 10 or 12.

Corporate and institutional office designers often struggle to resolve a number of competing and often conflicting demands, including budgetary limits, employee hierarchies, and technological innovationespecially in relation to computerization.

New compulsory age-appropriate relationship and sex education lessons in England should help equip children to deal with the growing demands of social media.

These demands must also be balanced with the need to create interiorsthat in some way enhance, establish, or promote a companies image.

Ways of arts' promoting our economyarts activity demands an joint/collective effort.

New, disruptive technology sometimes demands novel applications of the Constitution's protections.

On first hearing, this was the socially concerned chancellor, trying to change lives for the better, complete with "reforms" to an obviously indulgent system that demands too little effort from the newly unemployed to find work, and subsidises laziness.

On the other hand, Tronick himself is concerned that the worries about kids use of screens are born out of an "oppressive ideology that demands that parents should always be interacting" with their children.

The demands follow comments made last week by the health secretary, Andrew Lansley, who insisted the government could not force people to make healthy choices and promised to free businesses from public health regulations.

These days, because leisure time is relatively scarce for most workers, people use their free time to counterbalance the intellectual and emotional demands of their jobs.