protract

Delay always breeds danger; and to protract a great design is often to ruin it.

推迟经常孕育危险；拖延一个伟大的工程常常意味着毁灭它。

To protract the suspense, he paused for a considerable period of time before telling us the result of the experiment.

为了延长悬念，他在告诉我们实验结果之前停顿了相当一段时间。