Their age can be determined by extrapolation from their growth rate.它們的年齡可從其生長(cháng)速度來(lái)推定。

　　Multiplication of cells leads to rapid growth of the organism.細胞的繁殖導致有機體的迅速生長(cháng)。

　　Economic growth is expected to average 2% next year.明年經(jīng)濟增長(cháng)預計平均可達2%。

　　The new trade agreement should facilitate more rapid economic growth.新貿易協(xié)定應當會(huì )加快經(jīng)濟發(fā)展。

　　The government is determined to check the growth of public spending.政府決心要控制公共開(kāi)支的增長(cháng)。