hush-hush

The company is keeping the new product launch hush-hush until next month.

公司对新品发布一直保密到下个月。

用法提示：hush-hush 作形容词，表示“保密的、不公开的”，此处跟在 keep 后作宾语补足语。

Everyone at the office knows about the party, but we're supposed to keep it hush-hush.

办公室每个人都知道派对的事，但我们应当保密。

用法提示：hush-hush 作形容词，表示“秘密的”，用于 keep it hush-hush 结构。

The government's plans for the new policy were hush-hush, so few reporters knew the details.

政府新政策的计划是保密的，所以很少有记者知道细节。

用法提示：hush-hush 作形容词作表语，表示“机密、不公开的”。