当前时间，12小时制，时时：分分：秒秒

T : the current time in 12-hour HH:MM:SS format

youdao

当前时间，24小时制，时时：分分：秒秒。

T: the current time in 24-hour HH: MM: SS format.

youdao

五分钟后，我们将培根或面包放在表面5秒、30秒或60秒，然后检测转移到食物上的细菌数量。

Five minutes after that, we placed either bacon or bread on the surface for 5, 30 or 60 seconds, and then measured the number of bacteria transferred to the food.

youdao

So, if something cycles through five wavelengths in a single second, we would just say that the frequency of that wave is five per second.

如果一个东西在一秒,内经历了五个波长，我们就说这个波的,频率是每秒5次。

麻省理工公开课 - 化学原理课程节选

You have a whole bunch of runners and five of them have all run it in under 15 seconds.

你有许多跑步选手,其中五个都在15，秒内跑完了。

麻省理工公开课 - 固态化学导论课程节选

If it takes you 1 / 60 of a second to go around once, then you do it 60 times a second.

如果转一圈要 1 / 60 秒,那么一秒就转了60圈

耶鲁公开课 - 基础物理课程节选