Behind her,in the little room over the porch, a tiny clock ticked loudly on its shelf near the end of the bed.

VOA: special.2010.05.15

All right, one o'clock, you take the mantle back on.

好吧，1点整，你又装上了思想戒备。

耶鲁公开课 - 死亡课程节选

If that's all it knows, then in that scenario there is no building or anything else; it continues a trajectory both forward in time and backward in time, and it says that whatever seconds, one second before you set your clock to 0, it would've been on the ground.

如果是这样,在那种模式下,没有楼房或者别的什么,物体的运动轨迹可以沿时间可以向后延伸,也可以向前延伸,不管时间取什么值,在零点前一秒时,物体就在地面上

耶鲁公开课 - 基础物理课程节选

Back on Earth, space scientists and engineers worked around the clock to design and test new ideas to help the astronauts survive.

VOA: special.2009.07.22

Mister Harrison had to develop a clock that was not affected by the movement of a ship on the ocean or changes in temperature or atmospheric pressure.

VOA: special.2010.07.14

The clock stood on the shelf near the end of the bed.

VOA: special.2010.05.15

A senior U.S.official acknowledges the clock is ticking on showing the effectiveness of America's multibillion dollar attempt to rebuild Afghanistan.

VOA: standard.2009.09.04

Senators return at seven o'clock Thursday morning to vote on the bill, which would provide about access to health insurance coverage.

VOA: standard.2009.12.24

It will house 8,000 people in tents. Fifty security guards will be on duty around the clock.

VOA: standard.2010.03.29

"We are all concerned about Iran running out the clock on us on their nuclear program,".

VOA: standard.2009.09.17

"Three or four hours before I could fall asleep. I wake up three o'clock in the morning with the same stuff on my mind, tossing and turning.

VOA: standard.2010.05.04