276. 温室效应 green-house effect

277. 沙漠化 desertification

278. 过度放牧 overgrazing

279. 过度捕鱼 over-fishing

280. 滥砍乱伐 clear-cutting

281. 退耕还林 return cultivated land to forest

282. 沙尘暴 sand storm

283. 生态危机 ecological forest

284. 破坏生态平衡 destroy / upset the ecological balance

285. 自然保护区 nature reserve

286. 环境绿化 environmental greening

287. 禽流感 bird flu

288. 疯牛病 mad cow disease/ BSE

289. 口蹄疫 foot-and-mouth disease

290. 非典 severe acute respiratory syndrome (SARS)

291. 偷税﹑骗税 tax evasion and tax fraud

292. 扫黄打非 eliminate pornography and illegal publications

293. 严打斗争 strike-hard campaign

294. 公正合理的国际政治经济新秩序

a new and rational new international political and economic order

295. 外交纷争 diplomatic disputes

296. 维护世界和平 safeguard world peace

297. 国际惯例 international common practice

298. 民族分裂主义 ethnic separatism

299. 宗教极端主义 religious extremism

300. 世界的基本格局 basic world pattern