ALS\nabbr.\namyotrophic lateral sclerosis\nantilymphocyte serum\nApproach Light System 【航空学】进场照明系统\nautograph letter signed 有签名的亲笔信\nAutomatic Landing System 【航空学】自动着陆系统\nals,a.l.s.\nabbr.\namyotrophic lateral sclerosis\nanticipated life span 预期寿命,估计寿命\nantilymphocyte serum\napproach and landing simulator 【航空学】进场与着陆模拟器\nautograph letter signed 有签名的亲笔信

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