当…完结时
1. 当...完结时:a foregone conclusion早已确定的事,必然的结果,毫无疑问的事 | at the conclusion of当...完结时 | bring to a conclusion使结束;谈定(买卖等)
2. 当...结束时:at one's convenience 在方便的时候 | at the conclusion of 当...结束时 | at your end 你地
3. 在......结束时:come to a conclusion 结束 | at the conclusion of 在......结束时 | in conclusion (用在讲话或文章的结尾)最后