Eg. but our level of attentiveness tends to drop off over time .

但我们专注的水平随着时间推移而逐渐降低。

Without this shrewd attentiveness to what he nails as " hospitality as an aspect of strategy " kissinger believes the opening to china might never have happened ; and the world would be a very different place .

基辛格认为，如果不能敏锐地注意到他所谓的这种“把款待当作战略的一个方面”，中国之门的打开可能就不会发生，世界也会变得与现在截然不同。