始终如一，英文是：be consistent from beginning to end.详细解释：consistent英[kənˈsɪstənt]美[kənˈsɪstənt]adj.一致的; 连续的; 不矛盾的; 坚持的;[例句]Becker has never been the most consistent of players anyway.不管怎么说，贝克尔从来就不是表现最为稳定的球员。

beginning英[bɪˈgɪnɪŋ]美[bɪˈɡɪnɪŋ]n.开始; 根源; 原始思想; 前兆;v.开始( begin的现在分词);[例句]This was also the beginning of her recording career.这也是她唱片生涯的开始。end英[end]美[ɛnd]n.端; 结果; 终止; 最后部分;vt.结束，终止;[例句]The meeting quickly ended and Steve and I left the room.会议很快结束了，我和史蒂夫离开了房间