She does not know if he is alive or dead.
她不知道他是活还是死。
If you suspect a gas leak, do not strike a match or even turn on an electric light.
假如你怀疑有煤气泄漏，不要划火柴，甚至连电灯都不要开。
What difference will it make if he knows or not?
他知不知道有什么关系吗？
I don't know if he's telling the truth or not.
我不知道他是否说了真话。
I wonder if I should wear a coat or not.
我不知道该不该穿外套。
Mr. Sesemann at this moment did not know if he was awake or dreaming.
此时的赛赛曼先生不知道是醒着还是在做梦。
If science or philosophy may gain anything from poetry, they are welcome, but that is not the reason for poetry's being.
如果科学和哲学可以从诗里得到任何东西，它们是受欢迎的，但那不是诗歌存在的原因。
Or if not, then you have a good opportunity to learn a few lessons.
或者如果不是的话，你便有了好机会能学到一些东西。
However, you don't really care if the file is there or not.
然而，您并不是真的在意这个文件是否存在。
Supply project information in advance, even if he or she is not a member of the team.
预先提供一些项目信息，即使他或她不是团队的一名成员。
They might also be your son's or daughter's next employer, if not spouse.
即使他们不是你孩子的另一半，也可能是他们的下一任雇主。
This depends on whether you want to know if an item has children or not.
这取决于您是否需要了解一个条目是否有孩子。
Now, I need a test-after unit test to determine if it works or not.
现在，我需要一个后测试的单元测试以确定它是否可以工作。
It decides if the agent can stay or not when the connection disconnects.
它决定当连接断开时代理是否与连接保持在一起。
How can you tell if a school has accreditation or not?
那么，你又如何知道一所学校是不是受到认证了呢？
Knowing how the Universe began and if a creator was necessary, or not.
认知宇宙是如何开始的并且造物主是否是必须的。
When I read it aloud, I could tell if the feeling was right or not.
当我大声朗读时，我能够辨别出那种感情是否正确。
Oprah: What if he or she is not willing to help you?
欧普拉：如果他或她不愿意帮助你呢？
You'll know then if you're on track, or not!
然后你就会知道你是否进入轨道了。
You walk around people's offices, and you see if they're happy or not.
你在别人的办公室里走动，很容易就能发现他们是不是快乐。
Proceed slowly as you may not know if you are allergic to that food or not.
因为你不知道身体对那些食物产生过敏反应，所以你得缓慢进食。
If it's not relevant or lacks creative brilliance it will not work.
如果没有相关性或是缺乏创造性，它就不启作用。
If they're not happy or comfortable with their clothes, they can be less productive.
如果他们不高兴或者觉得他们的衣服穿着不舒服，他们的工作可能没有成效。
Again, this function starts by checking if local storage is available or not.
同样，这个函数从检查本地存储是否可用开始。
If you're not a PROM queen or golf pro, you're doomed.
你若不是舞会皇后或者高尔夫高手，你就永无出头之日。
I don't really care if a client tells their partner or not.
我真的不关心客户是否告诉伴侣。不过，他们不告诉的话会关系到我。
Run the following command to check if the daemons are started or not.
运行以下命令检查守护进程是否已经启动。
As for myself, I never bother to find out if I am right or not.
至于我自己，我从来不在乎我自己对还是不对。
As for myself, I never bother to find out if I am right or not.
至于我自己，我从来不在乎我自己对还是不对。
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