历时

When transformation of parts of speech takes place, we should distinguish synchronism from diachronism, grammar from rhetoric anti fixity from temporariness.

摘要转类，应当区分历时和共时、语法和修辞学、固定的和临时的。

The barbarization of Roman army had a long history and was a gradual and lasting process, so the pace of barbarization of army steeping up was an inevitable product.

罗马军队蛮族化由来已久，是一个渐进、历时的过程，3世纪罗马军队蛮族化步伐加快是其必然结果。