It shows what should do in certain time.
书里展示了什么时间干什么事。
Do they only belong and serve for certain people in certain time?
它们是否只存在于某些特定时间，服务于特定人群？
The classroom teaching is conducted in certain time and limited space.
课堂教学是在一定的时间和有限的空间中开展的。
At a certain time in the morning, the tape player would play soft music with a low and sweet voice of a young girl, "Wake up, please."
在早上的某个时间，录音机会播放轻柔的音乐，一个年轻女孩低沉而甜美的声音从录音机里传来：“请起床。”
Some spacecraft may have problems while in space after a certain amount of time.
一些宇宙飞船在太空中停留一段时间后可能会出现问题。
Now this can be a great thing in certain circumstances, but not all the time.
现在，在某些情况下鲁莽还不错，但并不是每时每刻都行。
The first one to come in gives me a certain time.
第一辆边进入,给我一定时间。
Not until you are in a certain time or certain occasion that you feel the truth.
不到一定的时间场合。
Every point in between the two ends has a certain time and space efficiency.
处于两个端线之间的每一点都代表该点的时空效率。
A certain amount of our sleep is a time filler in the winter.
我们在冬天可适当地补充了一些睡眠。
In my opinion, setting fireworks should be limited to certain areas and time.
在我看来，放烟花爆竹应仅限于某些地区和时间。
What's more, the highway is free in the certain time.
而且，在一定的时间内，高速路是免费的。
Certain Karmic events or new acquaintances occur in her life at this time.
某些业力事件或新相识会在此阶段发生在她生活中。
One thing is for certain: it's a pivotal time in Google's history.
有一件事可以肯定：现在是Google的关键时刻。
In a time when nothing is more certain than change, the commitment of two people to one another has become difficult and rare.
在的时候没有什么会改变某些比，对人民的承诺两个彼此变得困难和罕见的。
This vacuum bottle can make temperature of the inside liquid constant in a certain time.
这种真空瓶又叫“杜瓶”，可使盛在里面的液体不论泠、热温度都保持一定时间内不变。
Hiding in a certain time, miss some period of time palmprint.
躲在某一时间，想念某一段时光的掌纹。
You might need to do this, for example, if you work in a test lab and need a test run to complete by a certain time of day.
举例来说，如果您在测试实验室中工作，并且需要在一天的特定时间内完成某个测试回合，就可能必须设定时间限制。
Neil: Yes, you'll hear it all the time: especially in certain phrases.
没错。这个词用的很普遍，特别用在某些短语中。
Therefore, in the time line to retain a certain degree of arc.
因此在折线的时候要保留一定的弧形。
Don't obligate your partner to do things in a certain amount of time.
一定不要强迫你的伴侣在限定的时间内做什么事。
Has time stopped in certain parts of the world?
在世界某些地区停止时间？
In addition legislation might oblige us to store information for a certain period of time.
此外，相关法律只允许我们将这些信息保存一段时间。
In school, the national flag is usually raised at a certain time every day.
在学校里，通常每一天定时要升旗。
In school, the national flag is usually raised at a certain time every day.
在学校里，通常每一天定时要升旗。
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