单词	be up and doing
释义	见:be up and doingbe up and doingphr.① 很活躍；忙於工作
随便看	nucleus， near-magic nucleus， neutron-deficent nucleus， neutron-rich nucleus， nonmagic nucleus， nonspherical nucleus，nuclei nucleus，nuclei ambiguns nucleus，nuclei amygdaloid nucleus，nuclei caudatus nucleus，nuclei dorsalis nucleus，nuclei gracilis nucleus，nuclei hypothalamicus nucleus，nuclei olivary anterior nucleus，nuclei olivary posterior nucleus，nuclei pulposus nucleus，nuclei ruber nucleus，nuclei，cuneate nucleus，nuclei，edinger-westphal nucleus，nuclei，facial nucleus，nuclei，lenticular nucleus，nuclei，motor，dorsal nucleus，nuclei，motor，ventral nucleus，nuclei，pulpy nucleus，nuclei，red nucleus，nuclei，sensory，dorsal