可查明 meaning in English

detectable-can be discovered or ascertained the existence presence or fact

There is no exact or provable information about zarathushtra ' s life at court , though it may be assumed that it was here that he composed the gathas , and the names of king and court appear in the poetry as if , in oral recitation , they were there listening to him
尽管可以假设他在这里写下了迦特，正如诗上所说和口头朗诵的国王名字一样，他们在这里听他讲道，但有关琐罗亚斯德在宫庭的生活没有确切或者可查明的资料。