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As is shown in the pictures,with the rampancy of commercial fishing,the number of fish has dramatically shrunk.
如图所示，随着商业捕鱼的泛滥，鱼的数量已经显著下降。
In the first picture,we learn that the year 1900 witnessed a quite encouraging scene of world fishing.
在第一幅图中，我们可以看到在1900年，世界捕鱼业是鼓舞人心的，
There were various kinds of fish and only one fishing-boat.
画面上有很多余，但只有一艘渔船。
On the contrary, in the second picture,
而在第二幅图中，
in 1995 there was only one fish swimming freely but many fishing-boats sailing in the sea.
在1995年，只有一条鱼在游动，但有很多渔船在海上航行。
It is apparent that a disastrous change has occurred.
显而易见，灾难性的变化已经发生。
The purpose of the pictures is to tell us that due attention has to be paid to the reduction of ocean resources.
这组图的目的是告诉我们应该对海洋资源的减少给予充分重视。
Owing to the over-exploitation of marine resources,
由于海洋资源的过度开发，
the number of fish has declined at an accelerating rate.
鱼的数量已经明显下降。
If we let this situation continue as it is,we do not know where the fish will be in the future.
如果听任这种情况发展，我们不知道鱼的未来在哪儿。
By that time, our environment will suffer a great destruction.
到那时，我们的环境将会遭受巨大的破坏。
Hence, it is imperative for us to take drastic measures to reverse this disturbing trend illustrated in the above pictures.
因此，我们急需采取严厉措施扭转图画中所示的令人困扰的趋势。
For one thing, we should appeal to the authorities to make strict laws to control commercial fishing.
一方面，我们应该呼吁各级政府制定严格的法律来控制商业捕鱼。
For another, we should cultivate the awareness of people that ocean resources are of great significance to us.
另一方面，我们应该增强人们的意识：海洋资源对我们非常重要。
Only in this way can we protect our natural environment.
只有这样才能保护我们的海洋资源。
I believe that we humans can surmount this difficulty and we will have a brilliant future.
同时，我相信人类能够克服这个困难，并将拥有美好的未来。
