同义词
1)port engine stop!,左车停止！2)Stop port!,左车停止！3)straight-left lane,直左车道4)slow (speed) ahead port,左（车）进一5)Port engine full ahead!,左车进三！6)Port engine full astern!,左车退三！7)Port engine half ahead!,左车进二！8)Port engine half astern!,左车退二！9)Port engine slow ahead!,左车进一！10)Port engine slow astern!,左车退一！
