navigation
navigation
noun
[mass noun]
navigational
adjective
语源
noun
[mass noun]
- the process or activity of accurately ascertaining one's position and planning and following a route
航行；航海；航空 - In ancient times, navigation depended on the observation of landmarks and the stars, but successive centuries have seen the introduction of the magnetic compass, the astrolabe, quadrant, and sextant, and the marine chronometer. Modern navigation systems use the gyrocompass, radar, sonar, radio time signals, and signals from orbiting satellites
- the passage of ships
航运，水上运输
transporter bridges to span rivers without hindering navigation.
不妨碍航运的跨河运输桥。
■[count noun](chiefly dialect)a navigable inland waterway, especially a canal
(主方)内河水道（尤指运河）
navigational
adjective
语源
- early 16th cent. (denoting the action of travelling on water): from French, or from Latin navigatio(n-), from the verb navigare (see navigate)
考试词汇表
