translation.en: But what this lets you do is gives you that all-important traction, and counter-traction, so that you can dissect, so that you can sew, so that you can do all the things that you need to do, all the surgical tasks.
translation.zh: 但让你做的 是给你所有必要的牵引， 反向牵引， 这样你能够解剖、能够缝合， 你可以做所有你需要做的事， 所有的手术工作。