1、一个地方的人口越多，其对水，交通和垃圾处理的需求就会越大。 The more people there are in a place, the greater the demand for water, transportation and garbage disposal. 2、事实上，我们必须承认生命的质量和生命本身一样重要。 In fact, we

1、大多数物质遇冷收缩，所以他们的密度在固态时高于液态。 Most substances contract when they are cold, so their density is higher in solid than in liquid. 2、一项调查显示许多老人都有到大学继续学习的愿望。 A survey shows that many old peopl

1、一点一滴，这样做可以丰富我们的知识和拓宽我们的视野。 Little by little, this can enrich our knowledge and broaden our horizons. 2、能让我们的生活更美好，也就是说，可以给我们枯燥的生活带来色彩。 It can make our life better, that is to s