Unit 5 First aidLanguage points
高二人教新课标版必修五
1. You have three layers of skin which act as a barrier against diseases, poisons and the sun’s harmful rays.
你有三层皮肤作为屏障来保护你免遭疾病、毒药和有害光线旳侵害。
Important sentences
barrier 名词，“屏障，障碍物，隔膜”。如：The crowd linked arms to form a barrier. 群众臂挽著臂构成人墙。the language barrier 语言旳隔膜