是否...还不清楚/明确

not know whether one is coming or going It is not every couple that is a pair whether...or not whether or not The coast is clear. tell it like it is just as it is know what it is It is a pity what it is it is intended that As it is it is uncertain whether it is clear that it makes no odds whether I am not certain whether... The coast is clear it is domino with... it is said it is inferred that it is unlikely that