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n. 捕手，捕捉者；[棒球]接球手
n. 绑架者；抢夺贼
表演者
Mission specialist Leland Melvin controlled the robotic arm that helped Satcher and his crew during the space walks.
VOA : standard.2010.02.02
Back from their recent mission, Satcher and Melvin are trying to encourage these black students to think about careers in the U.S.space program.
(Voice) Dr.Robert Satcher and Randolph Bresnik are among the crew who worked for hours to install an enormous oxygen tank for the space station.
VOA : standard.2009.11.30
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