1. The Imperial Japanese Army (IJA), essentially an infantry force, fared poorly, and fell victim to a Soviet double envelopment. 日本帝国军本质上是一支步兵军队，运动力不良而沦为俄军双重包围下的牺牲品。
2. The comprehensive evaluation index system for the road construction projects is built and the traditional method of data envelopment analysis is improved. 建立了公路建设项目的综合评价指标体系，改进了传统的数据包络分析方法；
3. Drug envelopment of liposome can extend plasma half-life of drugs, elevate blood drug level, increases therapeutic effect, diminish baneful adverse reaction. 脂质体包封药物可以延长药物的血浆半衰期，提高血药浓度，增加疗效，减小药物的毒副作用。
英英解释
n.
1. the act of enclosing something inside something else
