1) 密集的人口 dense population
2) 适应环境 adjust to the environment
3) 濒危动物 endangered species/ endangered animals
4) 对.。.过敏 be allergic to…
5) 有益于心理健康 good for mental health
6) 身体健康 physical fitness
7) 感染病毒 infect with the virus
8) 缺少... lack of/ be short of
9) 汽车尾气 automobile/ vehicle exhaust
10) 照顾残疾人 care for the disables
11) 导致不正常的气候 lead to abnormal climate
12) 对环境造成破坏 damage to the environment
13) 染上.。.病 catch… disease/ get ill/ get infected by AIDS/ bacteria/ virus
14) 从事医学研究 study on/ engage in medical research
15) 消耗能量 dissipate energy (dispend驱散-dispensable-indispensable)
16) 消耗自然资源 consume natural resources/ the consumption of …
17) 保护环境 protect the environment
18) 至于某人的疾病 as for someone’s disease
19) 严重的食物短缺 the serious shortage(excess) of food
20) 发展医疗技术 develop medical technology
21) 每天做运动 do sports everyday
22) 倾倒工厂废料 factory waste dumping/ dump industrial waste
23) 教育公众 educate the public
24) 环境污染 environmental pollution/ contamination (
25) 体检 physical examination
26) 战胜疾病 overcome illness/ fight illness
27) 健康的饮食习惯 healthy eating habit
28) 高热量 high heat/ calorie
29) 在危急情况下 in emergent/ crisis situations
30) 在某人的自然状态下In someone's natural state
31) 保持均衡的饮食Maintain a balanced diet
32) 平局寿命 average lifetime
33) 降低某人的血压 reduce someone’s blood pressure
34) 降低某人的压力水平 reduce someone’ stress levels
35) 管理医疗机构medical institution management
36) 不可再生资源 non-renewable resources
37) 凭处方 script(手记) prescription
38) 保护环境 protect the environment
39) 预防疾病 prevent disease
40) 禁止吸烟 no smoking/ smoking prohibited
41) 净化污染的空气 purify(pure) the air pollution
42) 摄取充足的营养absorb/ take in adequate/ abundant nutrition(nutritional)
43) 痊愈，恢复 recover/ restore
44) 缓解人口过剩问题 alleviate the problem of overpopulation
45) 用尽资源 use up/ run out of resources
46) 挽救热带雨林 save tropical rainforest
47) 保持身体健康 keep fit/ keep in good health/ maintain physical fitness
48) 可持续能源 sustainable energy/ lasting energy resources。
49) 吃药 take medicine/ pills
50) 城市扩张 urban/ city expansion; urban sprawl
以上
(编辑：Sally)