这一科学认识并不完整，而且有关气候变化的精确程度、时间及其危险性仍存在着很大的不确定性。
This scientific understanding is incomplete, and there remain significant uncertainties about the precise magnitudes, timing, and dangers of climate change.
对于放射性物质危险性不断变化的评估而引发的愤怒和建议全都指向了东京电力公司。
Anger at the ever changing assessments of the radiation dangers and advice has so far been directed at Tepco.
疔疮是一种发病迅速，易于变化而危险性较大的急性化脓性疾病。
The deep nail-like boil is one kind of morbidity is rapid, easy to change, but risky big acute suppurative disease.
应用推荐