Question

十万火急啊，希望高手帮忙翻译成英文，谢谢了

在此之前，我们已经给贵校发过一封邮件，不知贵校是否受到，真诚希望与贵校合作，希望贵校能给予回复。

Answer 1

I had ever sent mail to your school at before and didn't sure if you got it or not. Anyway, I sincerely wish cooperate with yours. Looking forward your early reply.

Answer 2

We have sent an email to tou before,we don't know if you have received it yet.Kindly please check and confirm to me.Thanks.Hope we could have chance to make a cooperation with you.
Looking forward to your early reply.

Best Regards & Thanks

Answer 3

We've sent a mail to you before this, we don't know whether you have recieved it. Hope to cooperate with you sincerely.
Looking forward to your reply.

Best Regards

Answer 4

We have sent a mail to you before, and have not confirmed if you have recieved it yet. We hope to coorperate with you with all our regards, and hope to recieve from you soon.