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1·This is the first day of this semester and welcome to reback to school.

今天是开学的第一天，欢迎大家重回学校。

2·IF you wanna know me, you can give me a message and I'll reback it soon!

如果你想进一步了解我可以给我发信息我会尽快回复。

3·And now that they 'reback on their feet, we expect extraordinary commitment from them to help rebuild the economy.

现在是他们回报的时候了，我们期望得到他们大量的承诺以重振经济。