请翻译，我自己的翻译不是特别准确，求准确翻译belive是什么意思?

首先，pleasure是名词。
第一句你可以改成，it's my great pleasure to meet you
重新组合一下吧，你说的对我来说有点晦涩。

it's my great pleasure to meet you
so happy
i believe, as long as we try, our tomorrow will be better, and our friendship will go on forever
today, happy birthday, and best wishes to you

差不多这样看来能顺一点吧
believe那句话，可以说成，我相信，日久见人心，明天会更好，哈哈哈哈哈

i am very pleasure to meet u ,so happy ,i belive that as long as we try our tomorry is better .our friendship will run forevery.today happy brithday !the best wish to u .
可改为：
I am very pleased to meet u,so happy.I believe that as long as we try our best, tomorrow will be better. our friendship will run forever. Happy birthday to you. best wishes to you.
believe 就翻译成“相信”就行。
我相信只要我们努力，我们的友谊天长地久。

I am very pleased to meet you. I am so happy. I believe that as long as we try our best, we will have a bright future. Our friendship will last forever. Happy birthday today. All the best