The third subtype is a choriocarcinoma and it's made of germ cells that turn into syncytiotrophoblast cells which are the ones that help form the placenta.

第三种亚型是绒毛膜癌，它是由转化滋养细胞的生殖细胞组，滋养细胞帮助形胎盘。

Because all 200-plus of them work together to give us our shape, help us move, protect our organs, and produce blood cells to nourish our bodies.

因这 200 多块骨头共同作用我们的型，帮助我们运动，保护我们的器官，并产生血细胞滋养我们的身。

Theca lutein cysts are more likely to develop when there's more hCG than usual, like when there are multiple fetuses, or with gestational trophoblastic disease, where tumours made up of placental cells causes higher than normal hCG levels.

卵泡膜黄素囊肿一般发生于hCG较正常高的情况，如多胎妊娠或患有妊娠滋养细胞疾病时；该病中由胎盘细胞组的肿瘤会导致hCG较高。