英语词汇knots的起源、历史背景-英语词源词典

knots. Knots measure the speed of a ship at sea, each knot equaling a nautical mile (6,076 feet), which is slightly longer than a land-measured mile (5,280 feet). Since six nautical (geographical) miles are about equal to seven statute (land) English miles, a ship making 12 knots is actually traveling 14 land miles. A ship’s speed came to be measured in knots be- cause the log line thrown overboard to record distance was marked off by knots and had been used to measure a ship’s speed since early times. In its nautical sense knot is first re- corded in 1633.

词汇	knots
词源	knots. Knots measure the speed of a ship at sea, each knot equaling a nautical mile (6,076 feet), which is slightly longer than a land-measured mile (5,280 feet). Since six nautical (geographical) miles are about equal to seven statute (land) English miles, a ship making 12 knots is actually traveling 14 land miles. A ship’s speed came to be measured in knots be- cause the log line thrown overboard to record distance was marked off by knots and had been used to measure a ship’s speed since early times. In its nautical sense knot is first re- corded in 1633.
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