摘要
ThereismorethansixtythousandlakesinFinland,makesup9%ofitstotalareas.Mostlakeslinkedwithriversorchannels.Soonecantourmostofthecountrybytheboat.Inwintertheselakesandriversbecomeintogoodwayforsledges.TwothirdsofFinland'sterritoryisintheArcticCircle.ThenortherntipofFinlandhasfiftydayswithoutsunriseinwinter.
出版日期
2002年07月17日(中国Betway体育网页登陆平台首次上网日期,不代表论文的发表时间)