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英里是英制長度為5,280英尺或1,760碼的線性長度單位,根據國際協議在1959年標準化為1,609.344米。
The metre (international spelling) or meter (American spelling) (from the Greek noun μέτρον, "measure") is the base unit of length in the International System of Units (SI). The SI unit symbol is m. The metre is defined as the length of the path travelled by light in a vacuum in 1/299 792 458 seconds.