reticence
n. 沉默寡言
例句
Inherently introverted, he realised early on that as an academic, his reticence would prove disastrous in the lecture hall.
他生性内向，很早就意识到，作为一名学者，他的沉默寡言在演讲厅里将带来灾难性的后果。
Pearl didn't mind his reticence; in fact she liked it.
珀尔不介意他的沉默，事实上她喜欢这一点。
《柯林斯英汉双解大词典》
So why the official reticence?
那为什么官方又对此缄默不言呢？
