我和朋友通过电子邮件保持联络。
本国的伙伴机构会在计划期间和学员保持联络。
Partner organizations in the home countries stay in contact with the fellows throughout the program.
空中交通调度员通过无线电和飞机保持联络。
Air traffic controllers were in radio contact with the aircraft.
空中交通调度员通过无线电和飞机保持联络。
Air traffic controllers were in radio contact with the aircraft.
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