6一枝适宜发送莫尔斯讯号的防水手电筒，连同一副备用电池及一个备用灯泡，放在一个防水容器内；

6one Waterproof electric torch suitable for morse sign alling together with one spare set of batteries and one spare bulb in a waterproof container;

youdao

15一枝适宜发送穆尔斯讯号的防水手电筒，连同一副备用电池及一个备用灯泡，放在一个防水容器内；

15one Waterproof electric torch suitable for morse sign alling together with one spare set of batteries and one spare bulb in a waterproof container;

youdao

15一枝适宜发送穆尔斯讯号的防水手电筒，连同一副备用电池及一个备用灯泡，放在一个防水容器内；

15one Waterproof electric torch suitable for morse sign alling together with one spare set of batteries and one spare bulb in a waterproof container;

youdao