The rates at which the banks sell foreign exchange (selling rates) are higher than the rates at which they buy (buying rates).

银行卖出外汇的汇率（卖出价）高于买入外汇的汇率（买入价）。

youdao

There are different rates for the different exchange instruments, The rates at which the banks sell foreign exchange (selling rates) are higher than the rates at which they buy (buying rates).

不同的信用工具有不同的汇率，即电汇汇率。 即期交易按即期汇率交割，远期交易按远期汇率交割。

youdao

So the Fed wants to push down longer-term rates by buying longer-term government bonds.

所以联储希望通过购买长期债券以降低长期利率。

youdao

When Uncle Sam stops buying, interest rates should rise and bond prices decline.

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It makes sense that the absence of Fed buying should move rates higher, but it is not necessarily true.

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While much of the developed world was either cutting rates or buying bonds to further ease monetary policy, vast swaths of the developing world were increasing rates to rein in inflation.

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