considerable是什么意思？

He gives his staff a considerable sum for tips.

Italy boasts more UNESCO World Heritage sites than any other country in the world, granting it considerable power and influence within the organization.

Leslie presents considerable evidence for the proposition that the society as a whole is growing less curious.

There is considerable and justified concern that the United States is falling behind much of the rest of the developed world in these essential disciplines.

It is important that we be mindful of the earth, the planet out of which we are born and by which we are nourished, guided, healed-the planet, however, which we have abused to a considerable degree in these past two centuries of industrial exploitation.

The topic of the nature of skill—and the differences between beginners and experts has been one of considerable discussion in cognitive science and philosophy.