英语翻译，谢谢！

His words indicates that he has already been conscious of the danger of not trying his best to learning new knowledge.

This was the first time that he make a speech before such a large audience.

Shanghai is not what it was before,because a majority of the old houses made room for the new high building.

Keep in mind:call 110 in case of any emergency.

what worries the environment-protectors is not the natural disasters buts the activities of the human beings.

The maglev train covers more than 400km per hour,and has already been a tour spot in Shanghai.

我自己写的。

1. He then showed he has realized the danger of hard work to learn new knowledge
2. This is the first time he has so many in the audience Before his speech.
3. Shanghai is not what it was, because most of the old houses have been knocked down. being replaced by new buildings.
4. Please remember : any emergency situation, dialed 110.
5. so that environmental concern is not natural disasters but who human activities.
6. speed maglev train for more than 400 kilometers, and it has become a tourist attraction in Shanghai

1 He then showed he has realized the danger of hard work to learn new knowledge
2 This is the first time he has so many in the audience before the speech
3 Shanghai is not what it was, because most of the old houses have been knocked down and replaced by new buildings
4 Please remember : any emergency, dial 110
5 So that environmental concern is not natural disasters but who human activities
6 Maglev trains at speeds of more than 400 km, it has become a tourist attraction in Shanghai