injury time （足球比赛中）伤停补时

cold injury 冻伤

skin injury 皮肤损伤

human injury 人身事故

1. skin n.皮；皮肤

skin care 护肤品；皮肤护理

dry skin 干性皮肤

skin color 肤色

under the skin 在内心，心里

sensitive skin 敏感性皮肤

skin cancer 皮肤癌

in one's skin 裸体

skin disease 皮肤病

oily skin 油性皮肤；油性肌肤

skin graft 植皮手术，皮肤移植术；移植的皮肤

skin temperature 皮肤温度；外壳温度

2. essential adj.最重要的；不可缺少的；本质的

essential condition 必要条件

essential element 必需元素

3. organ ['ɔ:ɡən] n.器官, 机构,机关;风琴,口琴

administrative organ 行政机关；管理机构

organ transplantation 器官移植

sense organ 感觉器官

4. barrier n.屏障；障碍（物）

language barrier n. 语言障碍,

trade barrier 贸易壁垒

a barrier to progress 进步的障碍。

5. vital adj.至关重要的；生死攸关的

教材原句P35：If the injuries are second or third degree burns, it is vital to get the victim to the doctor or hospital at once.如果是二度或者三度烧伤, 至关重要的是把伤者立刻送去看医生或送往医院。

(1)be vital for/to sth.对......极重要的

(2)在It is vital that句型中, that从句的谓语常用虚拟语气，即(should)＋动词原形。

6. treat vt.& vi.治疗；对待；款待；n.款待；招待

(1)

(2)It's my treat.我请客。

①(2010·重庆卷)Now I try to treat everyone with respect, no matter who I think they are.