英语句子翻译 英译中

1.在他们在美国真正安顿下来之前，他们再次奋斗了15年（settle down安顿）
2.等到世博会开幕时，上海会涌进数百万的外国人（将来完成时）
3.他在分辨红色与绿色上有困难（have terouble with）
4.他威胁说要把这件事公布于众
5.只有种足够多的树才能防治沙尘暴的再次发生
6.他的体重最近有点失控，所以他决定减肥
7.我第一次看到他的时候他已经大学毕业了。

1before the settled down in America,they have struggled in America for another fifteen years.
2Shanghai will have got in millions of foreigners when the world expo of shanghai opens
3he has trouble with telling red and green.
4he threatened that he would release the matter to the public.
5only after we plant enough trees can we prevent the sandstorm once again.
6he decided to lose weight because his weight seemed to be not under the control.
7he has graduated from college when the first time i saw him.

In the United States in them before they settle again, striving for 15 years
2 when opening, Shanghai world expo will be poured into millions of foreigners
3 he tell red and green are difficult
4 he threatened to put this matter
5. Only kind enough trees to prevention of sandstorm occur again
6 a bit out of his weight recently, so he decided to lose weight
7. The first time I saw him he had graduated from university.