人口
1.human population
2.population pyramid
3.population growth rate
5.population movement
8.population systems engineering
10.history of population
1.As I mentioned before, a national campaign will start next month. We've decided to use a variety of media for full coverage. First, we'll have 30-second spots on television once a day for 3 weeks. At the same time, we'll do 15-second radio commercials
如我以前所提到的，我们下个月将开始全国范围内的宣传活动。我们已经决定利用各种媒体做全面宣传。首先，我们在电视上做持续三个礼拜的广告，每天一次，每次30秒。同时，我们还会选人口较多的城市，用电台广播宣传，每天三次，每次15秒。最后，我们还会有一些户外宣传活动，在大城市的主要入口处树立广告牌。
2.The 55 ethnic minorities except Han people take up fewer of the total population in the country, so they were called minorities.
由于汉族以外的５５个民族相对人口较少，习惯上被称为少数民族。
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