I have to manilate the baby through the pubic symphysis.

我得从耻骨孩子夹出来。

And finally there's expulsion, where the anterior shoulder slips under the symphysis pubis, followed by the posterior shoulder, and then finally followed by the rest of the body.

最后娩出，前肩在耻骨娩出，接着后肩娩出，最后剩的身体娩出。

After the delivery of the head, there's restitution, where the head externally rotates so that the shoulders can pass through the pelvic outlet and under the symphysis pubis.

头娩出后，复位，头向外旋转以便肩部经过骨盆出口，在耻骨。