例句與造句

1. 191 specimens of fossil woods collected from neogene sediments of yunnan province are studied . seven taxa are identified and described in details . among of them , three new species are established as ericaceoxylon longlingense , ericaceoxylon hymenanthesoides and vacciniaceoxylon vacciniumoides
   本論文研究了我國云南龍陵大壩和鎮(zhèn)安、昌寧紅星晚上新世以及楚雄洲呂合晚中新世191個化石木標(biāo)本，鑒定出7種化石木類型，其中越桔型木屬為新屬，越桔型木、常綠杜鵑型木和龍陵杜鵑型木為新種。
2. It's difficult to find fossil wood in a sentence. 用fossil wood造句挺難的