世界上第一例完整面部移植手术

in addition to除…之外，还……
例句：In addition to French, he has to study Japanese.
除了法语外，他还得学日语。

2. The medical team says Norris's surgery is the most extensive full-face transplant to date and the first time a face transplant was performed by a surgical team that specializes in facial and reconstructive surgery and dentistry.

specialize in专攻, 精通, 以…为专业
例句：The cinema specializes in Italian films.
这家电影院专门放映意大利电影。

3. ''He put the mirror down and he thanked me and hugged me," he said.

put down放下
例句：Put down that book and help your mother with the dishes.
放下那本书, 帮你母亲洗餐具。

4. The doctors say the experience gained in previous face transplants beginning with that first one in France, helped them perfect the technique they used to give Richard Norris a second chance at a normal life.

used to过去惯常,以前习惯于
例句：We used to grow peanuts.
我们过去是种花生的。