Some things are better left unsaid. 有些事还是少说为妙. Silence is golden. 沉默是金.
Don't spread it around. 不可传扬出去.
It's top secret. 这是最高机密. Ignorance is bliss. 无知便是福.
It's a trade secret 这是商场内线消息. Loose lips sink ships. 嘴巴不牢坏大事.
We don't want to wave the flag. 我们可不愿太招摇.
