A couple of questions, a pointed inquiry about allergies, then I wiped his upper arm with alcohol, and drew into a syringe 0.5ml of clear fluid from the glass vial.

问几个问题，一个尖锐的过敏问题，然后我用酒精擦拭他的上臂，从玻璃小瓶里抽出0.5毫升的透明液体，放入注射器。

So all that goo is well-protected by the bones of your vertebrae and cranium, as well as membrane layers, or meninges, before being bathed in a cushy waterbed of clear cerebrospinal fluid.

所以所有这些粘性物质都被你的椎骨和头盖骨以及膜层或脑膜很好地保护着，然后在干净的脑脊液中沐浴。