In Alberta and Saskatchewan there are many hills where dinosaur bones were found.亚伯达和萨斯喀彻温省的许多山区发现了恐龙化石....a flightless dinosaur.没有飞行能力的恐龙The largest brain possessed by any dinosaur weighed about a kilogram.最大的恐龙脑子大约有一公斤...
When the aggregates reached a certain size the inner cells became lignified.当这些聚体达到一定体积时,内部的细胞变成木质化.Hydroliquefaction of lignified biomass polysaccharide is studied at low temperature.研究了木化生物质聚糖的低温加氢液化.The cell wall has ...