"Debarking is not a medically necessary procedure," Dr. Klausner said.
切除声带并不是必要的手术，克拉苏纳医生说。
2
But even Klausner, a well-respected researcher, had to be persuaded at first.
但在最初，即使是这样一位备受尊敬的研究员，也需要做说服工作。
3
"Dental disease is associated with kidney and liver disease, so it is really important for pet owners to have their pet's mouth examined by a veterinarian and get regular cleanings," Klausner said.