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- Ecology is the science about the relationships and interactions with life system and environmental system, and where there are lives there are ecological problem, phenomenon and law. 摘要生态学是研究生命系统和环境系统相互作用、相互关系的科学，凡生命所至，就有生态学的问题、现象和规律。
- With the world抯 rapid prosperity,the globality of ecological problem stands out more severe now. 世界各方面的迅速发展,使生态安全问题全球性更加突出。
- Sandy desertification is the main ecological problem the Otindag Sandy Land at present. 沙漠化是浑善达克沙地面临的主要环境问题。
- Forest entomologists have concentrated on ecological problems. 森林昆虫学家所重视的是生态问题。
- Soil erosion is the most serious ecological problem in the world, and it is more serious in the regions of expansive soils than other regions. 水土流失是全球最大的生态环境问题,膨胀土地区工程建设所造成的水土流失更为严重。
- The Karst rocky desertification becomes the third ecological problem of our country after the desertification in northwestern area and the soil erosion in the loessial area. 岩溶石漠化成为继西北地区沙漠化和黄土地区水土流失之后的我国第三大生态问题。
- Concern about ecology is a recent development. 对生态的关心是最近才有的事。
- Stand biomass which is the foundation of researching many forestry and ecology problems is a basic quantity character of the forest ecological system. 摘要林分生物量是森林生态系统最基本的数量特征，是研究许多林业问题和生态问题的基础。
- I look at this problem from a different viewpoint. 我从不同的观点来看这个问题。
- Ecological problems can't be solved feebly in the areas in bad ecology,and many ecological problems appear in the areas in good ecology suddenly. 责任不清、心理准备不足、资金物质储备不足,派生出利益不协调、社会动员不顺、环境投入不足等,造成生态差的地方无力解决生态问题,生态好的地方突然出现许多生态问题。
- She skirted round the problem of the high cost. 她避而不谈巨额费用问题。
- It may take a long time to find a solution to the problem. 也许要花很长时间才能找到解决这个问题的办法。
- Human ecology is a branch of social science. 人文生态学是社会科学的一个分支。
- In dealing with the problem he was cautious to an extreme. 他在处理这个问题时谨慎得过分了。
- The ecological saving,reserving and compensating tax is the ability and condition that can solve ecological problems rapidly in the areas in bad ecology,and that ... 生态储蓄、生态储备和生态补偿税是人类思想史和文明史的重要转变,引发深刻的环境革命。
- The problem is how we are to get the raw material. 问题是我们怎样得到原材料。
- Heavy traffic poses a problem in many old towns. 交通拥挤是许多旧城镇的难题。
- The problem is quite plain to us. 那问题我们都很明白。
- Sewage itself is another major contaminant of water that can cause ecological problems and such human diseases as cholera and dysentery. 污水是引起水体污染的另一个重要因素，它会导致一些生态问题，使人引发霍乱和疟疾。
