这些项目经常遭受来自短缺的现金流，没有国家和有限透明度的明确保证。
These projects often suffer from poor cashflow, no explicit guarantee from the state and limited transparency.
它们之所以被成为最佳实践，是因为人们曾经尝试过它们并且证明它们是有效的，所以我可以明确保证它们一定能够起到成效。
They are called Best Practices because they are tried and tested so I can be reasonably sure they are going to work.
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