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

　　Multiplication of cells leads to rapid growth of the organism.細(xì)胞的繁殖導(dǎo)致有機(jī)體的迅速生長。

　　Economic growth is expected to average 2% next year.明年經(jīng)濟(jì)增長預(yù)計平均可達(dá)2%。

　　The new trade agreement should facilitate more rapid economic growth.新貿(mào)易協(xié)定應(yīng)當(dāng)會加快經(jīng)濟(jì)發(fā)展。

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