Why am I supposed to tip the barber for cutting my hair but not the dentist for fixing my teeth?
为什么我应该给为我理发的理发师小费，而不必给为我修牙的牙医小费？
2
Objective With cutting dermis pad of eyebrow and silicone prosthesis to redound nasal tip, to probe into application of body dermis in cosmetic surgery.
目的用切眉制成的真皮垫结合硅胶假体行隆鼻术，探讨自体真皮在美容外科的应用。
3
The actual separation of the metal starts as a yielding or fracture, depending upon the cutting conditions, starting from the cutting tool tip.