Moreover, under the reactive approach, it would be prohibitively expensive and operationally problematic to implement the recommended additions and improvements identified in paragraphs 45 to 50 above.
而且，在被动办法之下，执行上面第45至50段所述加盖和改建的建议的花费将是非常昂贵，无法承担的，而且也难以进行。