And do them with a clock, right, time yourself under exam conditions.

用，就像在考试那样，给自己。

I can't set timers, so I can't use alarms and timers yet.

我不会设置器，我还不能使用闹和器。

Use timer tab to set countdown clock going on my browser.

用器选项卡设置浏览器上的。

Got some fennel seeds going in, I see the timer ticking down.

放一些茴香籽进去，我看到器在。

45 minutes on the clock, and your time starts now!

45 分，现在开！

UNIDENTIFIED MALE: Our countdown for Apollo 11, now five minutes, 52 seconds and counting.

阿波罗11号5分52秒，开。

Saturday, it unveiled a countdown clock marking 1000 days until the games began.

周六，日本揭幕，距离奥运会1000天。

So we're going to put a little Stopwatch on.

我们来设个器。

Yeah. So the term pulsar timing array implies we're timing these pulsars.

好的。“脉冲星阵列”这个词意味着我们在为这些脉冲星。

Three minutes. And he used a kitchen timer. I felt like a softboiled egg.

三分，他用了一个厨房器，我觉得自己就像一颗溏心蛋。

It's how long you've got to live.

你生命的。

When we start again, it'll be the countdown...

接下来是数。

The circadian rhythm is like a clock or timer.

昼夜节律就像表或器。

The Pomodoro technique makes use of a timer.

番茄工作法会用到一个器。

MLB is implementing a pitch clock, sort of like a shot clock in basketball.

美国职业棒球大联盟正在实施一项新的比赛规则，这有点像篮球比赛的方法。

OK, I'm just going to start my watch.

好吧，我要开了。

And the excited crowd started a countdown to the demolition.

激动的人群开。

And what happens if it hits zero?

如果到零会怎样？

It's the last big day of primaries in the 2016 presidential race.

2016总统初选进入。

When you feel something like this, stop the timer.

当出现这种感觉后，停止。