naivety
n. 轻信，幼稚；天真；无邪的行为
例句
She has lost none of her naivety.
她丝毫没有失去那份天真烂漫。
《牛津词典》
They laughed at the naivety of his suggestion.
他们嘲笑他提的建议太幼稚。
If there was any weakness, it was naivety.
就算有什么缺点，也只是天真而已。
