that continuously pumps blood across their lungs... 能够持续将血液送至肺部
so that scientists can study her continuously. 方便科学家进行持续的研究
almost continuously cropping the abundant green grass. 享用着取之不尽的大片青草
Frigatebirds spend months continuously airborne at sea 军舰鸟可以在海上持续待几个月