持续不断

We have had incessant snowfall since yesterday afternoon.

从昨天下午开始就续不断地下雪。

She pursued the study of English for five years.

她续不断地学了五年英语。

Things rapidly became calm, though beneath the surface the argument rumbled on.

事情迅速平静下来了, 然而, 在种平静背后争论如隆隆雷声, 续不断。

The rebel held and cleg as rebel-held enclave is coming sustain under sustained pressure from the army.

反叛者控制地受到来自军队续不断压力。

Imperfective aspect: indicating a present, ongoing, continuous, or recurrent action.The present and the imperfect tense convey this aspect.

我去查了希腊文动词时态，确实是有里讲现在续式，(Imperfective aspect) 讲是一个现在开始续不断动作。