achieve词性转换

　　例句：

　　This achievement is unlikely ever to be equalled.

　　这一成就可能任何时候都没有能与之匹敌的。

　　His ‘ Beethoven ’ sculpture is seen as the crowning achievement of his career.

　　人们认为他制作的贝多芬雕像是他在事业上取得的最高成就。

　　例句：

　　This achievable region is much larger than that for the time sharing system.

　　这个区域远大于时分系统的相应区域。

　　An Achievable Algorithm Suitable to Cell Image Connected Area

　　一种易于实现的适于细胞图像连通区域的标记算法