Half astern port!

基本解释左车后退二左车后退二!左退二

网络释义

1)Half astern port!,左车后退二左车后退二!左退二2)Port engine half astern!,左车退二!3)Slow astern port!,左车后退一4)full astern starboardprot,右左车全速后退5)Full astern port!,左车全速后退6)Half astern both!,双车后退二