单词Siamese twin
网络: 连体双婴；连体婴；连体双胞胎
To his surprise, this gave rise to a Siamese twin embryo where an extra head was generated from the transplanted cells.
没想到，这产生了一个连体胚胎，植入的细胞产生了一个额外的头部。
If you unscrew it, it actually looks like a Siamese twin bulb, with two bases and one head.
如果你拧开它，它看去真的就像连体孪生灯泡，有两个基座，两个灯头。