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| 21. | The United Nations has estimated that the annual average rate of growth of world population would decline |
| 据联合国估计，世界人口的年均增长率将从60年代中期的大约2%降至80年代初的大约1.8%，至本世纪末将下降到1.6%左右。 |
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| -- 来源 -- 新闻报道 - xwbd_lianheguorenkoubaogao |
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| 22. | that a diet rich in the monounsaturated fatty acids which are contained in olive oil protected people from |
| 也许最令人惊讶的发现是，1999年5月南意大利的科学家们发现橄榄油饱含着单一的不饱和脂肪酸，可保护人们防止“与年龄有关的损耗体力的疾 |
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