The biggest weakness of PPP is that the equilibrium is only a very long-run one, as it completely ignores capital flows.

PPP的最大弱点在于，其平衡只存在于非常久远的长期，而且它完全忽略了资本流动。

youdao

Thus the very long-run course of prices has almost always been upward.

因此，从很长的时期来看，价格差不多总是向上的。

youdao

Twice as many economists think Mr McCain's plan would be bad or very bad for long-run growth as Mr Obama's.

ECONOMIST: The Economist's poll of economists

So, you have to pay a lot of attention to overbought and oversold oscillators, and these could be very long-term ones that run from one to three to five months, so that you are buying at the bottom of a relative strength cycle instead of buying at the top.

FORBES: A Long and Short for a Whipsaw Market

For one thing, it is very difficult to influence the long-run growth rate.

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