单词 | navigation aid |
释义 | > as lemmasnavigation aid navigation aid n. ΚΠ 1943 Science 13 Aug. 9 (advt.) Navigation aids, rules of the road, tides and currents. 1968 Economist 18 May 69/1 Big aircraft are shoe-horned on to small landing strips with only elementary navigation aids. 1992 Transair Pilot Shop June–Aug. 24/1 The Global Positioning System is the most accurate navigation aid the world has ever seen. < as lemmas |
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