论文部分内容阅读
近日,在一种新型高能显微镜(xiǎn wēi jìnɡ)的帮助下,德国科学家第一次观察到了一个形成仅几小时的胚胎,它由脊椎(jǐ zhuī)
Recently, with the help of a new type of high-energy microscope, German scientists first observed an embryo that formed only a few hours,