老大难

• Traditional Chinese Character(HanT): 老大難
• Simplified Chinese Character(HanS): 老大难
• Bopomofo(Mandarin Phonetic Symbols): ㄌㄠˇ ㄉㄚˋ ㄋㄢˊ (ㄌㄉㄋ)
• Bopomofo(Zhuyin Keyboard Input/IME): xl3284s06
• (ASCII) Hanyu Pinyin: "laodanan" "Lao3Da4Nan2" "Lao3 Da4 Nan2" (LDN)
• (Latin) Hànyǔ Pīnyīn: LǎoDà [ Lǎo Dà ]
• (英文翻譯) English Translation: "Big problem"
• (西語翻譯) Traducción Español: "Gran problema"
• (日文翻譯) 日本語翻訳: "大問題"