- Traditional Chinese Character(HanT):
四年
- Simplified Chinese Character(HanS):
四年
- Bopomofo(Mandarin Phonetic Symbols): ㄙˋ ㄋㄧㄢˊ (ㄙㄋ)
- Bopomofo(Zhuyin Keyboard Input/IME): n4su06
- 「四年」的注音符號/「四年」怎麼發音怎麼唸: ㄙˋ ㄋㄧㄢˊ
- (ASCII) Hanyu Pinyin: "sinian" "Si4Nian2" "Si4 Nian2" (SN)
- (Latin) Hànyǔ Pīnyīn: Sì [ Sì ]
- (英文翻譯) English Translation: "Four years"
- (西語翻譯) Traducción Español: "cuatro años"
- (日文翻譯) 日本語翻訳: "四年間"