他在底下吵了好半天了.He's making a great deal of noise at the counter.她在一堆文件里搜寻,终于在底下找到了他的信.She searched through the pile of papers and found his letter underneath.我们可以听到他们在底下房间里谈笑.We could hear them in the room below, laughi...
该目昆虫的前翅发展成坚硬的鞘翅或壳.In this order the the forewings are modified to form hard elytra or cases.鸟儿的翅膀肿了,前翅不见了.The birds'wing was swollen and the primaries missing.雄蟋蟀凭借前翅的磨擦发出唧唧声.TYPICAL USE : Male crickets chirping noi...
Organization and assembly of phospholipid molecules into membranes, micelles , tubules, etc.磷脂质分子组织并组合成细胞膜 、 微胶粒 、 细胞小管等.Just like the synthetic detergents, bile salts form micelles.正如合成有机溶剂, 胆汁酸盐形成微囊.Methods: The mixed ...