1、方便：convenient/convenience2、效率：efficient/efficiently/efficiency3、节省和浪费：save time/money/space; economical, thrift ,waste time/money/space; costly, lavish4：人的心理健康：independent, cooperative, competitive, considerate, confident, creative, sociable,perseverant; selfish, isolated, conservative5、人的身体健康：health, disease, strong, strength, energetic6、娱乐：colorful, pleasure, joy, recreation, entertainment, relax, tired, boring, lonely 7、环境：environment, pollute, poisonous, dirty8、安全和危险：safe
