by reason of
US /baɪ ˈriː.zən ʌv/
UK /baɪ ˈriː.zən ʌv/

短语
1.
由于, 因为
because of; on account of
示例:
•
The game was canceled by reason of heavy rain.
比赛由于大雨取消了。
•
He was excused from the meeting by reason of illness.
他因病获准缺席会议。
在 Lingoland 学习这个单词
由于, 因为
because of; on account of