owing to: 由于；因为
Owing to the rain, the meeting has to be put off.
会议因雨而推迟了
I couldn’t attend the meeting owing to illness.
我因病不能出席会议.
due to sth/sb: 由某人[某事物]引起的；由于某人[某事物]
例如：
The team’s success was largely due to her efforts.
该队的成功在很大程度上是由于她的努力.
Her failure in the speech contest was due to her nervousness.
她在演讲比赛中失利,原因是她太紧张了.
They arrived late due to the storm.
他们由于风暴而来迟.