Yabla Chinese

Yabla video uses of 迄今为止
但 dàn
迄今为止 qìjīnwéizhǐ
还 hái
没有 méiyǒu
一种 yīzhǒng
解释 jiěshì
能 néng
真正 zhēnzhèng
排除.... páichú....
But, so far there is not one explanation that can genuinely rule out