希克森致密星系群31的合成图显示了4个相互混合的星系。

The composite image of Hickson Compact Group 31 shows the four galaxies mixing it up.

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图七：emporia公司的新款Solid手机把消费群锁定为50岁以上人士和有听力障碍的人士。

Pic.7: The new Solid phone by Emporia is aimed at people over 50 or with hearing disabilities.

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图六：我一直想知道，在这群勇士里面，谁是胆子最大的那个？

Fig6.My question is: Who will be the bravest guy among them?

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This inner cell mass develops into the embryo, which this here shown at a later stage is beginning to be clear that it's becoming an organism that looks like us.

内细胞群发育成为胎儿,这张图这是一个相对晚期的阶段,能越来越清晰地观察到,这团东西开始有个人形了

耶鲁公开课 - 生物医学工程探索课程节选