There are a lot of unproven allegations flying around.
有很多未经证实的谣言在迅速传播开来。
《柯林斯英汉双解大词典》
2
Even setting aside the unproven hints of ancient oceans, the extent of the outflow channels suggests that a huge total volume of water existed on Mars in the past.
即使不考虑未经证实的古代海洋迹象，流出渠道的范围表明，过去火星上存在着大量的水资源。
3
This is particularly true with unproven new products.