In a more optimistic, but increasingly less likely scenario, world economic recovery would begin in the second half of 2009 and GWP would expand by 2.3 per cent in 2010.
3. 有一种比较乐观、但越来越不太可能的情况是，2009年下半年世界经济开始复苏，2010年世界总产值将增加2.3%。