１７２１年

• Traditional Chinese Character(HanT): １７２１年
• Simplified Chinese Character(HanS): １７２１年
• Bopomofo(Mandarin Phonetic Symbols): ㄧ ㄑㄧ ㄦˋ ㄧ ㄋㄧㄢˊ (ㄧㄑㄦㄧㄋ)
• Bopomofo(Zhuyin Keyboard Input/IME): "u fu -4u su06" (ufu-4usu06)
• (ASCII) Hanyu Pinyin: "yiqieryinian" "Yi1Qi1Er4Yi1Nian2" "Yi1 Qi1 Er4 Yi1 Nian2" (YQEYN)
• (Latin) Hànyǔ Pīnyīn: YīQīèrYī [ Yī Qī èr Yī ]
• (英文翻譯) English Translation: "1721"
• (西語翻譯) Traducción Español: "1721"
• (日文翻譯) 日本語翻訳: "1721年"