So that screw that you thought about beforehand can actually be used to screw a bone together -- a fractured bone together -- and deliver drugs at the same, while your bone is healing, for example.
所以你先前考虑到的螺丝 就能切实利用 来固定骨头--把断裂的骨头固定在一起 同时也释放出药物 同时让你的骨头愈合，打个比方说