ASL
abbr. 海拔高度（Above Sea Level）；大气科学实验室（Atmospheric Sciences Laboratory）；美国手势语言（American sign language）
例句
Clara had been studying ASL for the past year to help blind and deaf people and she knew she'd be able to finger spell into the man's palm.
克拉拉在过去的一年里一直在学习美国手语，以帮助盲人和聋人，她知道她可以在这个人的手掌上拼写。
Little by little, I discovered my love for ASL.
渐渐地，我发现了我对美国手语的热爱。
The following term, I registered for an ASL class.
接下来那个学期，我注册了一个美式手语班。
