1.'You said you'd stay till tomorrow.' — 'I know, Bel, but I think I would rather go back.'
“你说过你要呆到明天的。”——“我知道，贝尔，但我还是想回去。”
2.They need to recruit more people into the prison service. But another point I'd like to make is that many prisons were built in the nineteenth century.
监狱需要招募更多的工作人员。但我想补充一点，很多监狱都是在19世纪建造的。
3.Please excuse me, but there is something I must say
不好意思，但有些话我必须说。
4.'I don't think I should stay in this house' — 'But why?'
“我觉得我不应该再呆在这所房子里。”——“可是为什么？”
5.This is but one of the methods used to try and get alcoholics to give up drink.
这只是为让那些酗酒者戒酒所尝试的方法之一。
日语的但是怎么念
De.Mo或者Shi.Ka.Shi都可以表示“但是”的意思
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团长补充：
【日文】でも【中文】但是【汉语拼音发音】Dei
mo
【日文】うるさい【中文】少啰嗦【汉语拼音发音】Wu
Lu
Sai