lifetestn.生命测试lifen.一生；生命；生活；人生life circle of organization组织生命周life-as-it-could-be如其所能的生命life- cycle cost analysis寿命周期费用life-detection instrument生命探测仪Life Science and Technology生命科学技术Life is in British columbia真正的生活是在哥伦比亚山脉Life at Low Reynolds Number低雷诺数时的生命life span of furnace lining炉衬寿命life time of chain reaction链反应期限life-adjustment education生活适应教育