Suddenly she dropped the quill as a wild happiness flooded her.她突然感到一阵无限的快乐,当即丢开了手里的鹅毛笔.She dipped a quill in ink, then began to write.她将羽毛笔在墨水里蘸了一下，随后开始书写。Set of clear crystal inkwell with quill, book, diploma and gradu...
urea poisoning尿素中毒urea cycle尿素循环Methods: The synthesis uses urea as material process includes condensation, opening loop, chloridization and nitrosation reaction.方法以尿素为原料,经缩合, 开环, 氯化,亚硝化而得.A kidney also takes urea and mi...
a mountain fastness山寨They could have withdrawn into the mountain fastness of Eryri.他们本可退到山中要塞埃利里去。The rebels have withdrawn to their mountain fastness for the winter.叛军撤至他们的山寨过冬.This process features simple operation, go...