system and natural beauty.它们(野生动物)是生态系统和自然美中不可缺少的一部分。

　　229. wild life reserve 野生动物保护区

　　230. only if we human beings take some drastic measures can wild animals be preserved.只有采取果断措施，野生动物才能得以保护。

　　231. narrow the gap between…缩小……之间的差距(分歧)

　　232. in this way, both parental hopes and personal ideals will come true.这样，父母的期望与个人的理想都能实现。

　　233. the expansion of deserts must be stopped if we are to survive on this planet.如果我们想在这个星球上生活下去，沙漠扩张的势头必须得到遏止。

　　234. a green belt of trees绿化带

　　235. we hope that man can make great efforts to develop better ways to bring the spreading deserts under control.我们希望人类能竭尽全力来控制沙漠的蔓延。

　　236. it is not difficult to explain the reason for their surprising amount of interest in famous people’s lives.记者对名人生活如此热衷，其原因不难解释。

　　237. satisfy one’s curiosity 满足某人的好奇心

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