1.not subject or susceptible to change or variation in form or quality or nature;

the view of that time was that all species were immutable, created by God

2.persistent in occurrence and unvarying in nature;

maintained a constant temperature

3.remaining the same for indefinitely long times

1 . 不變的

詞源: cambiare(L.), to exchange 交換changelessa. 不變的char car

1 . 比例不變

Schmidt : maintain current resources what what we do to use scale to be stabilized relatively namely , especially we will maintain nuclear energy to use scale changeless .施密特：我們所做的就是保持當前能源使用比例相對穩定，特別是我們將保持核能使用比例不變。

1 . 價格不變

Such , the surface sees the value changeless , fell however actually a half grade ., 這樣 , 表面看價格不變, 實際上卻降了一個半等級.

1 . 成員不變

Yahoo objects what Yi pits offering stoutly , in order to keep existing directorate member changeless .雅虎果斷反對伊坎的提議，以維持現有董事會成員不變。

1 . 效用不變

extends stock dividend , accuse a partner effectiveness changeless , small shareholder effectiveness increases in ., 發放股票股利 , 控股股東效用不變, 中小股東效用增加.