Just what the soldier was doing in Bireij is unclear.就连那个士兵在比雷杰干什么都不清楚。To this day, it's unclear whether he shot himself or was murdered.至今尚不清楚他究竟是饮弹自杀还是被谋杀。"Things are moving ahead."— I found that statement vague a...
However, the molecular mechanism of ameloblast differentiation remains unclear.但是, 有关成釉细胞分化的分子机制仍未明确.An open verdict was the only appropriate one , given the very unclear evidence at the inquest.调查发现的证据十分不清楚,只有作出存疑判决才恰当....