英文翻译,和解释
One rumor was that he had been placed under house arrest. There were reports indicating that he had been detained, while others said he was simply at home, conducting meetings, but was free to come and go as long as he informed authorities.（我需要准确的翻译, 尤其是后半段）（再解释as long as, 在这里的意思,为甚麽后半句还有一个but,并解释为甚麽会放一个but,在这里）