OET interlinear REV 9:2

uW Translation Notes:

Note 1 topic: figures-of-speech / simile

ἀνέβη καπνὸς ἐκ τοῦ φρέατος, ὡς καπνὸς καμίνου μεγάλης

went_up (Some words not found in SR-GNT: καί ἤνοιξεν τό φρέαρ τῆς Ἀβύσσου καί ἀνέβη καπνός ἐκ τοῦ φρέατος ὡς καπνός καμίνου μεγάλης καί ἐσκοτίσθη ὁ ἥλιος καί ὁ ἀήρ ἐκ τοῦ καπνοῦ τοῦ φρέατος)

The point of this comparison is that a large quantity of smoke came from the shaft, just as a great furnace would give off a large quantity of smoke. If it would be helpful in your language, you could make this point explicitly. Alternate translation: [a large quantity of smoke went up from the shaft, as does from a huge furnace]

Note 2 topic: figures-of-speech / activepassive

ἐσκοτώθη ὁ ἥλιος καὶ ὁ ἀὴρ ἐκ τοῦ καπνοῦ τοῦ φρέατος

(Some words not found in SR-GNT: καί ἤνοιξεν τό φρέαρ τῆς Ἀβύσσου καί ἀνέβη καπνός ἐκ τοῦ φρέατος ὡς καπνός καμίνου μεγάλης καί ἐσκοτίσθη ὁ ἥλιος καί ὁ ἀήρ ἐκ τοῦ καπνοῦ τοῦ φρέατος)

If your language does not use this passive form, you could express the idea in active form or in another way that is natural in your language. Alternate translation: [the smoke from the shaft darkened the sun and the air]