The individual colours within the light spectrum are believed to have an effect on health.光谱中不同的颜色被认为对健康有不同的影响。The new regulations may have an effect on small businesses.新规定可能对小企业有影响。What you eat when you are pregnant can have an effect on your baby.怀孕期间你所吃的都会对宝宝有影响。