It was discovered that rates of carbon cycling and growth rates among city trees were nearly four times faster than those in the countryside.

研究发现，城市树木的碳循环速度和生长速度几乎是乡村树木的四倍。

youdao

With constraints on credit, interest rates up four times since October 2010, and 55% of borrowers paying rates above the benchmark, a more restrictive policy stance is damping growth.

在信贷受限的情况下，自2010年10月以来已经加息四次，有55%的借款人支付的利率高于基准利率，更加紧缩的政策立场开始遏制增长。

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The bank has increased rates four times since April to tackle high inflation.

为了应对高通胀，从四月开始，该行已经四次提高基准利率了。

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Randolph Roth studied homicide rates over the past four hundred years in parts of the United States and western Europe.

VOA: special.2009.12.19

But the study found that death rates for women have fallen by thirty-four percent.

VOA: special.2010.05.05

Since last year, four more states reported adult obesity rates of more than 30 percent - meaning that at least 30 percent of their populations are obese.

VOA: standard.2010.07.02

China has increased the reserve ratio six times and raised interest rates four times since October.

FORBES: China Raises Interest Rates To Fight Inflation

More than half of this surgeon's patients were residents of two counties with fusion rates four times the national average.

WSJ: Top Spine Surgeons Reap Royalties, Medicare Bounty

The Bank of England has already increased interest rates four times in the past six months to keep inflation under control.

BBC: Sterling strength tames inflation