1. This acted as a comfort to those missing the normality of home life and were a morale booster. 对那些思念正常家庭生活的水手来说，它们担当了安抚的任务，是士气的促进者。
2. Convenience and Utility (back packs, experience or currency booster, health, mana, stamina, ammunition, etc. 方便和实用工具（背包，经验或货币助推器，健康，法力，耐力，弹药等）
3. It flew over Japan towards the Pacific, with two booster stages dropping into the ocean to the east and west of Japan, Tokyo said. 东京方面说：“火箭飞过日本朝太平洋方向飞去，两节火箭助推器分别落在日本东部和西部的海洋里面。”
英英解释
n.
1. a person who backs a politician or a team etc.
2. someone who is an active supporter and advocate
3. a thief who steals goods that are in a store
4. an amplifier for restoring the strength of a transmitted signal
5. the first stage of a multistage rocket
6. an additional dose that makes sure the first dose was effective
