Miàn / duì / zhè / xiē / xuán / ào / de / zì / rán / xiàn / xiàng / kē / xué / jiā / réng / zài / xún / zhǎo / dá / àn

面对这些玄奥的自然现象，科学家仍在寻找答案。

Scientists are still searching for answers to these mysterious natural phenomena.