Sealed orders; a sealed move in chess .

密封命令；象棋中封棋的一着。

"I was engaged, Sir, on what we call sealed orders, to sail this ship for that gentleman where he should bid me," said the captain. "so far so good."

“先生，我是被我们称为密封的命令任命的，要将这艘船开到这位先生命令我开到的地方，”船长说，“到目前为止，一切顺利。”

"My lips are sealed," Hillary Clinton said. "I am under very strict orders not to talk about it."

希拉里克林顿说：“我不能多说。他们要求我严格保密。”