freebien.免费的东西；免费赠券freeadj.自由的；免费的；畅通的；没有…的；未使用的；空闲的；随意的v.释放；使自由；使摆脱；解除；使可用于(某目的)adv.免费地；自由地free right of information acquirement信息获取的自由权利Free Yourself from Preconceived Ideas解脱自己的成见与概念free flow surface constructed wetland自由表面流人工湿地free exploring basic research project自由探索性基础研究项目Free-standing rehabilitation clinic独立康复诊所Free-Trade Alliance of the Americas美洲自由贸易联盟free electron molecular orbital model自由电子分子轨道模型free-plowing and directly-seeding水稻免耕直播freezing and drying biological product冷冻干燥生物制品freezing point depressing glycoprotein降凝固点糖蛋白