/confirm/i:
vt. 确认；确定；证实；批准；使巩固
Four people have confirmed to attend our wedding.
有四人确认参加我们的婚礼。
acknowledge:vt. 承认；答谢；报偿；告知已收到
He saw me at the party but didn\'t acknowledge me.
他在聚会上看到了我却并没有向我致意。
水利万物而不争,
而万物莫能与之争。
