编辑：share 来源： 美联出国考试 发布时间：2016-10-25
Paragraph 5: There is little doubt, however, that desertification in most areas results primarily from human activities rather than natural processes. The semiarid lands bordering the deserts exist in a delicate ecological balance and are limited in their potential to adjust to increased environmental pressures. Expanding populations are subjecting the land to increasing pressures to provide them with food and fuel. In wet periods, the land may be able to respond to these stresses. During the dry periods that are common phenomena along the desert margins, though, the pressure on the land is often far in excess of its diminished capacity, and desertification results. 【OG- Desert Formation】
3. The word “delicate” in the passage is closest in meaning to
1.delicate [ˈdelɪkət] adj. 微妙的；精美的；易碎的；纤弱的
TOEFL例句：Replacement can be a marvelously precise process, so that details of shell ornamentation, tree rings in wood, and delicate structures in bone are accurately preserved. ——TPO-20 Fossil Preservation
GRE例句：If our eyes could receive and measure infinitely delicate sense-data, we could perceive the world with infinite precision.——GRE No.7-1, Section A
2.delicate 英 [ˈdelɪkət] 美 [ˈdɛlɪkɪt]
1).ADJ-GRADED 娇美的;精美的;雅致的;纤细的Something that is delicate is small and beautifully shaped.
例句：He had delicate hands.他有一双纤细的手。
2).ADJ-GRADED (颜色)柔和的;(味道)鲜美的，清淡可口的;（气味）清香的 Something that is delicate has a colour, taste, or smell which is pleasant and not strong or intense.
例句：Young haricot beans have a tender texture and a delicate, subtle flavour...嫩菜豆口感细腻，味道清香、淡雅。
3).ADJ-GRADED 娇贵的;脆弱的;易碎的 If something is delicate, it is easy to harm, damage, or break, and needs to be handled or treated carefully.
例句：Although the coral looks hard, it is very delicate.珊瑚虽然看上去坚固，实际上非常易碎。
4).ADJ-GRADED 娇弱的;柔弱的 Someone who is delicate is not healthy and strong, and becomes ill easily.
例句：She was physically delicate and psychologically unstable.她身体孱弱，心理上也不够稳定。
5).ADJ-GRADED 微妙的;棘手的;需要小心处理的 You use delicate to describe a situation, problem, matter, or discussion that needs to be dealt with carefully and sensitively in order to avoid upsetting things or offending people.
例句：The European members are afraid of upsetting the delicate balance of political interests...欧洲成员国害怕会打乱各政治利益集团间的微妙平衡。
6).ADJ-GRADED 技巧性很强的;注重细节的 A delicate task, movement, action, or product needs or shows great skill and attention to detail.
例句：...a long and delicate operation carried out at a hospital in Florence...在佛罗伦萨一家医院里进行的一场耗时长、难度高的手术