IATA Director General Giovanni Bisignani says the impact of higher fuel prices is lessened by the global economic recovery, but the airline industry still faces significant hurdles.
From a purely economic point of view, the region has already overcome some of the hurdles to a single currency, however.
从纯经济学的观点看，无论如何该区域已经克服了单一货币的一些障碍。
3
However, the economic viability of clinical it is still questioned by most hospital administrators because of changing standards, a variety of legal hurdles, and the volatility of the marketplace.