dead reckoning

漢語翻譯

英文解釋：

名詞 dead reckoning:

1. an estimate based on little or no information
   同義詞：guess, guesswork, guessing, shot
2. navigation without the aid of celestial observations

例句：

1. It was cloudy; and the captain had to calculate our position by dead reckoning.
   空中陰雲密布，船長不得不用羅盤測航法以確定我們的位置。