1
- a simultaneous transmission of the same programme on radio and television, or on two or more channels（无线电和电视）联播节目。
1.1
- N. Amer. a live transmission of a public celebration or sports event〈北美〉（公共庆祝活动或体育比赛的）现场直播：
simulcasts of live races.
现场直播比赛。
with obj.
- broadcast (a programme) in such a way实况直播（节目）：
it will be simulcast live to 201 countries.
该节目将同时向201个国家实况直播。
词源
1940s: blend of SIMULTANEOUS and BROADCAST.