壳斗浅碟状, 高 4-8 毫米,宽1.5-2.5厘米, 包著坚果基部.Cupule discoid , 4 - 8 mm 1.5 - 2.5 cm, enclosing basal part of nut.白垩纪尚无壳斗科可靠的大化石记录,微化石需要进一步研究才能确定亲缘关系以及古新世壳斗科已经分化出两个类群.No creditable macrofossil record of the Fagaceae exists in the C...
一只鹳缓缓飞过。A stork flew slowly past.麦格和裘像一对忠实的小鹳似地喂她们的母亲.Meg and Jo fed their mother like dutiful young storks.某夜,他的坐舰“ 鹳 鸟”号在黑夜之中追逐一艘潜艇并和它相撞.One night his ship, the Stork; pursued and rammed a U - boat in the darkness....
The natives used to hammer the metal into arrowheads using heavy stones.土著人以前总是用沉重的石头把这种金属锤打成箭头.Arrowheads on the lines indicate the direction in which the taugent is to be drawn.电力线上的箭头表示所要画的切线方向.Bronze weapons: spears,...