汉译英（无论你信不信，他在国外学习很成功）

Whether you believe or not, he succeeds largely in studying abroad.

believe it or not.....后面半句找不到合适的词了。。

believe it or not,his overseas study is excellent.

No matter you belive or not, he achieved a great success in study abroad.

Believe it or not, he has made a great achievement in his study abroad.

believe it or not,he achieved a lot when studying abroad.