1. “These aren’t the slickest applications in the world,” Mr. Abelson said.
Abelson说，“这些并非世界上最精巧的应用程序。
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2. An onscreen button would turn on the program, Mr. Abelson explained, for perhaps a few hours on a Saturday night when the person wanted his friends to know where he was.
3. An onscreen button would turn on the program, Mr. Abelson explained, for perhaps a few hours on a Saturday night when the person wanted his friends to know where he was.
