发布于:2025-07-06 05:55浏览量:138文/优校网
1.备用品,备用设备
2.(紧急时的)可依靠(的人物),助力
3.【军】一级战斗准备
4.救援船只
5.党羽
6.【无线】(呼号)准备发报[收报]
1.备用品,备用设备
2.(紧急时的)可依靠(的人物),助力
3.【军】一级战斗准备
4.救援船只
5.党羽
6.【无线】(呼号)准备发报[收报]
1.someone or something that is always available to be used if they are needed in a particular situation
1.a standby airplane ticket is an inexpensive one that you buy just before the flight is ready to leave if there are still seats available