我们必须在明天八点前到达火车站.
We must arrive the train station before 8:00am tomorrow.
多蔬菜水果对健康有害.
Too much vegetable and fruit is harmful to health.
许多外国人发现学好汉语真不容易.
Many foreigners find that it is difficult to learn Chinese well.
如今羽越来越多的人关注食品安全.
Nowadays more and more people are concerned about the safety of food.
这个城市里有多少人口?
What is the population of this city?