火车票价很可能会保持不变。
Many species appear to remain unchanged in the fossil record for millions of years'u2014a situation that seems to be at odds with Darwin's model of continuous change.许多物种似乎在数百万年的化石记录中都保持不变——而这种情况似乎与达尔文的持续变化模型不一致。
These expenses will remain unchanged.这些支出将维持不变。