Unsubstituted
未被取代的
🗣️ 情景例句
Think about the word and use it, in your mind, in a sentence.
想想这个字，然后去用它，在脑子里，在句子里。
To err is human.
人无完人。
French test are awful, aren't they?
法语太可怕了，你说呢？