Some low blood heft the case and not obvious cause of disease.

有些低血掂病例并无明显病因。

youdao

Fire is often not obvious from the hidden cause of the fire.

火灾往往是由不明显的隐火引发的。

youdao

Fire is often not obvious from the hidden cause of the fire.

火灾往往是由不明显的隐火引发的。

youdao