As is shown in the pictures， with the rampancy（猖獗） of commercial fishing， the number of fishes dramatically（sharply） decreased. In one pictures， there were various kinds of fish and only one fishing-boat in 1900. On the contrary， in1995 there was only one fish， with many fishing-boats. [图表描述段]
The purpose of this picture is to show us that due （great enough） attention has to be paid to the decrease （decline） of ocean resources. Owing to over-fishing the number of fishes has obviously dropped. If we let this situation go （continue） as it is， we do not know where fish will be in the future .By that time， our environment will suffer a great destruction. [意义阐述段]
Therefore， it is imperative for us to take drastic （effective） measures. For one thing， we should appeal to our authorities to make strict laws to control commercial fishing. For another， we should enhance the awareness of people that the ocean resources are very vital to us. Only in this way can we protect our ocean resources. Also I believe that we humans can overcome this difficulty， and we will have a brighter future. [建议措施段]
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