传染病正在遭受洪灾的很多灾民中蔓延。Infectious diseases are spreading among many of the flood victims.针对公众对该疾病的不断蔓延日益担忧，从而出台了这一举措。The move follows growing public concern over the spread of the disease.一场严重的森林大火的蔓延使得形势更加复杂。The situation wa...
The resulting radiation is known as airglow.其发出的辐射称为气辉.The nighttime airglow, or nightglow, correspond to the intensity of a candle at 100 m distance.夜间辉光或夜辉相当于在100米距离的一支烛光的强度.These techniques include the ionospheric tom...