sight sight Learn the meaning of sight as a noun and a verb in English, with synonyms, antonyms, and related words. Find out how to use sight in different contexts, such as viewing, aiming, or banking
a pilot cannot fly by sight A pilot cannot fly a plane by sight alone. In many conditions, such as flying at night and landing in dense fog, a pilot must use radar, an alternative way of navigating. Since human eyes are not very good at determining speeds of approaching objects, radar can show a pilot 5 how fast nearby planes are moving
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