由于种种原因英文

Thereason.....==由于什么原因

It were so many reasons caused that problem.

for some reason 绝对正确

Owing to some reasons...

due to various reasons,....

“由于什么原因”"For what reason"reason 英[ˈri:zn]美[ˈrizən]n. 原因; 理由; 理性; 理智;vt. 推理，思考; 争辩; 辩论; 向…解释;

For various reasons

A variety of reasons.