1.be associated with 与..有关
例句:Foreigners always associate China with the Great Wall.
外国人总是把中国和长城联系在一起 。
2.immune system 免疫系统
例句:The patient's immune system would reject the transplanted organ as a foreign object.
病人的免疫系统会对移植器官产生异质排斥反应 。
3.food poisoning 食物中毒
例句:He had suffered a serious case of food poisoning over the Christmas holidays.
在圣诞假期里,他经历了一次严重的食物中毒 。
4.made from 由..制作
例句:Nylon is made from air, coal and water.
尼龙是由空气、煤和水加工制成 。