Normal forgetting may even be a safety mechanism to ensure our brain doesn't become too full.

I offer a simple proposition in response: Many of our problems—class attendance, educational success, student happiness and well-being—might be improved by cutting down the bureaucratic ( ' , 官僚的) mechanisms and meetings and instead hiring an army of good teachers.

The effects are complex, affected by socio-economic factors, health-service provision, emotional support and other more physiological (生理的) mechanisms.

When we can't actually remove the source of our fear, we tend to adapt psychologically by adopting a range of defence mechanisms, says Tom Crompton, change strategist for the environmental organisation World Wide Fund for Nature.

In the old days, we didn't much write like talking because there was no mechanism to reproduce the speed of conversation.

A shattering loss of confidence inspires behavior that overwhelms the normal self-correcting mechanisms that usually prevent a recession from becoming deep and prolonged: a depression.

They find the self-correcting mechanisms dysfunctioning

Self-regulatory repair mechanisms of the free market.

Broadly, the deal provides a mechanism for Google to compensate authors and publishers?whose rights it has breached (including giving them a share of any future revenue it generates from their works).