ALS      
noun [ U ]  medical US uk/ˌəɪ.elˈes/ us/ˈeɪˌelˈes/ (also Lou Gehrig's disease); (UK motor neuron disease)
 运动神经元病(amyotrophic lateral sclerosis的缩写)
abbreviation for amyotrophic lateral sclerosis: a serious disease that affects the nerve cells and causes the muscles to become weaker and smaller