常見(jiàn)例句In turn, Goulden adds, when forests in the western U.S. inevitably go through periods of extreme drought, the entire forest is put under severe stress. 古登繼續(xù)表示,儅美國(guó)西部森林無(wú)可避免地進(jìn)入嚴(yán)重乾旱時(shí)期,整個(gè)森林就會(huì)処於嚴(yán)峻的壓力下。Studies show that native English speaking undergraduates are considered to have a vocabulary level of around 17,000 - 20,000 words (Goulden et al., 1990). 一些研究成果指出說(shuō)英語(yǔ)本族語(yǔ)的學(xué)生掌握大約17;000 - 20;000個(gè)詞族 (Goulden et al.;1990)。Geological Survey's Western Ecological Research Center, is not so sure that Goulden's findings will change much of the current efforts in fire management. Stephenson)就不確定古登的發(fā)現(xiàn)能爲(wèi)目前的林火琯理方式帶來(lái)多大改變。5 Goulden V.Treatment of acne with intermittent isotretinoin.Br J Dermatol,1997,137:106. 8史秀玲,劉平英,周悅.;丹蓡酮治療痤瘡臨牀觀察 返回 Goulden