祝贺你抵达了生命的又一个里程碑，愿你每天都象过生日一样充满喜悦。祝你生日无比快乐！ Permit me to congratulate you on reaching another of these anniversary landmarks today. May each day be as happy as your birthday. Have a wonderful birthday!
确立了法律判例的里程碑式的决定 A landmark decision that set a legal precedent.
里程碑，里程标路边所设立的石制标志，以英里指示从给定的一点到该路标的距离 A stone marker set up on a roadside to indicate the distance in miles from a given point.
每个生日都是我们人生之旅的一个里程碑，愿你的生日百事顺意。 Each birthday is a milestone we touch along life's way. May your birthday be happy in more ways than one.