DKK1最开始被确定为蟾蜍胚胎头部形成诱导因子[7]。对骨骼质量调节有重要作用[8 - 10]。

DKK1 was initially identified as an inducer of head formation in Xenopus embryos (7) and plays an important role in the regulation of bone mass (8-10).

youdao

你的身体从脚踝到头部应形成一条直线。

Your body should form a straight line from ankles to head [a].

youdao

几千年的腐蚀创造而成了一条像龙的岩石形成。去年四月，当我回到那儿，这条龙的头部由于不明原因而倒塌了。

A dragon like rock formation created from thousand years of erosion. When I returned there last April, the dragon's head has collapsed for unknown reason.

youdao

The Essex stood half over the other prophet as if it were pleased to guard what it had finally brought down. The man didn't look so much like Haze lying on the ground on his face without his hat or suit on. A lot of blood was coming out of him and forming a puddle around his head.

埃塞克斯看着这个先知，好像很高兴地守卫着,自己撞倒的这个人，这个男人看起来与海斯并不相像,没有戴着帽子或穿着西装趴在地上，一大堆血,从他的体内涌出，在头部附近形成了一个水坑状的东西。

耶鲁公开课 - 1945年后的美国小说课程节选