例:Business-to-business (B2B) sites vary from those providing simple lead generation,to complex marketplaces serving a variety of buyers and sellersto private extranets.
例1:While producinglarge quantities of CO2, these computers emit a great deal of heat, so the centers need to be well air-conditioned, which uses even more energy.
例2:They fear that it hurts their economies, depriving them of much-needed skilled workerswho could have taught at their universities, worked in new products their hospitals and come up with clever new products for their factories to make.
例:Financial regulation will have to catch up with the most irresponsible practices that led banks down in this road,in hopes of averting the next crisis, which is likely to involve different financial techniques and different sorts of assets.