2004- 2007年的南非的GD P年平均增长率为5%，那已经是南非经济的最佳表现。
Its best performance was in 2004-07, when GDP rose by an average of 5% a year.
只要任何人在直觉上认定最佳点，就可以很快达到，之后增长率为零，其后亦保持为零。
Any people that has intuitively identified its optimum point will soon reach it, after which its growth rate becomes and remains zero.
这种连系（无须是一成不变的）令人对所谓正数增长率表示人口还没有达致最佳点的乐观假定感到怀疑。
This association (which need not be invariable) casts doubt on the optimistic assumption that the positive growth rate of a population is evidence that it has yet to reach its optimum.
当然，增长率为正数，可以作为人口在最佳点之下的证据。
Of course, a positive growth rate might be taken as evidence that a population is below its optimum.
当然，增长率为正数，可以作为人口在最佳点之下的证据。
Of course, a positive growth rate might be taken as evidence that a population is below its optimum.
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