In words, 1000 is penned as 'One Thousand'. Within the Roman numeral system, the quantity a thousand is represented through the money letter 'M'. The 'M' comes from the Latin word 'mille', which means thousand.يجب بعد تركيب النانو عدم استخدام الصابون والمواد الكيميائية في غسل السيارة و