因此在第二秒内，速度没变。

So during the second second, the velocity is not changing.

youdao

录制音频的第一第二秒可能非常响亮。

First second of recorded audio may be very loud.

youdao

尽管只有零点二秒的时间差，脑部就会“忘记”你在替自己哈痒。

Your brain "forgets" that you are tickling yourself—even with a delay as short as a fifth of a second.

youdao

In fact, he broke the 4 minutes and 10 seconds mark, 4 minutes and 5 seconds mark and he got 4 minutes and 2 seconds and stopped, like everyone else-- could not go below the 4 minutes and 2 seconds.

他突破了四分十秒，四分五秒,跑到四分两秒时停止，像所有人一样-,无法低于四分二秒。

哈佛公开课 - 幸福课课程节选