主要为水生的节肢动物,通常身体分节并有壳质的外骨骼.The outermost layer of cuticle of an arthropod exoskeleton, composed mostly of wax.一群主要是水生的 、 能行 光合作用 而无法精确定义的有机体.Members of a group of mostly aquatic, photosynthetic organisms ( see photosynthe...
Sarazen became the first golfer to win all four majors.萨拉岑成为了首位高尔夫四大满贯赛冠军。English majors would be asked to explore the roots of language.英语专业的学生会被要求探究语言的根源。Oil majors need not fear being unable to sell their crude.大型石油公司...