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当且仅当

dāng qiě jǐn dāng

4-character word Traditional 當且僅當

What 当且仅当 means

1. if and only if

The characters in 当且仅当

• 当dāng(onomatopoeia) dong; ding dong (bell)
• 且qiěand; moreover; yet
• 仅jǐnbarely; only; merely
• 当dāng(onomatopoeia) dong; ding dong (bell)

Example sentences

• 当且仅当你知道我们的密码你才可以进来。
  You can come in if and only if you know our password.
• 当且仅当冰淇淋是香草口味，小王会吃这个冰淇淋。
  Dāngqiějǐndāng bīngqílín shì xiāngcǎo kǒuwèi, xiǎo Wáng huì chī zhège bīngqílín.
  If and only if the ice-cream is vanilla flavour will Xiao Wang eat it.
• 当且仅当一个人是个没有结婚并可以结婚的男人，那个人是个未娶。
  A person is a bachelor if and only if that person is a marriageable man who has never married.