1.When some waste chemicals are put into the sea, they can hurt or kill animals and fish.
当一些化学废料被排放到海洋时，它们会伤害或杀死动物和鱼类。
2.As can be seen from the chart, an increasing number of people own mobile phones in China now.
从图表中可以看出，现在中国拥有手机的人越来越多。
3.Nowadays some teenagers prefer to watch TV at home rather rather than go out for exercise.
如今，一些青少年宁愿在家看电视也不愿意出去做运动。
4.Our city has developed into a big one, which is four times the size of what it used to be.
我们的城市已经发展成了一个大城市，是原来的4倍大。
