The sailors should show relevant flags by day or pilot lamps at night.

来源：学生作业帮助网 编辑：作业帮 时间：2024/05/24 02:57:16

The sailors should show relevant flags by day or pilot lamps at night.

水手应该在白天挥动相关的旗帜或者在晚上打出指示灯

船员应该在白天展示有关的旗帜，到了晚上舵手要亮灯。