It's a bit inconsiderate of her not to let you know when she expects to arrive.
她不让你知道她什么时候会到，这样做有些不体谅人。
You'll let me know when they're arriving, won't you?
他们到的时候你会通知我的，对吗？
Do you let people know when you are taking pictures of them?
当你给别人拍照时，你会让他们知道吗？
Like most tools, you need to know when and how to use it to the best advantage.
与大多数工具一样，您需要知道何时以及如何充分利用它。
I know when the journey began—the day Mom snapped off the TV set and put us in her Oldsmobile for that drive to the library.
我知道旅程是什么时候开始的——那天妈妈关掉电视机，让我们坐上她的 Oldsmobile去图书馆。
Put up a copy of your study guide at home so you and your family can see it, and email a copy to your friends so they know when you have spare time.
在家里放一份学习指南，这样你和你的家人就可以看到它，并通过电子邮件发一份给你的朋友，这样他们就知道你什么时候有空闲时间。
Active learners are constantly monitoring their understanding, they know when their comprehension breaks down, and they ask for help before they become lost.
主动学习者不断地监测自己的理解，他们知道自己的理解什么时候出现了问题，在迷失方向之前就会寻求帮助。
Some people don't know when they're well off.
有些人身在福中不知福。
The microwave beeps to let you know when it has finished.
微波炉烹饪完毕时会发出哔哔声提醒你。
They project the image of confidence, and perhaps most importantly, they know when to stop.
他们自信笃定，最重要的是，他们知进退，张弛有度。
Do you know when Havoc in Heaven was created?
你知道动画片《大闹天宫》是什么时候制作的吗？
You bet. Just let me know when, and I'll be there.
没问题。告诉我时间，我会来的。
Do you know when Tianwen 1 landed on the red planet?
你知道天问1号是什么时候登陆这颗红色星球的吗？
Do you know when China's Tianwen-1 probe landed on Mars?
你知道中国的“天问一号”探测器是什么时候登陆火星的吗？
Do you know when the end-of-term concert will begin, Alfred?
阿尔弗雷德，你知道期末音乐会什么时候开始吗？
Do you know when the exchange students will come to our school?
你知道交换生什么时候来我们学校吗？
It is important to know when to ask for help and understand why you need it.
重要的是要知道何时寻求帮助，明白你为何需要帮助。
I'd like to tell you about the table manners which you should know when you visit France.
我想告诉你一些去法国时应该知道的餐桌礼仪。
You should try to have a good relationship with your neighbors, because you never know when you may need their help.
你应该努力与你的邻居保持良好的关系，因为你永远不知道什么时候会需要他们的帮助。
Fools never know when they are well off.
人若愚痴，有福不知。
You have to know when to quit.
你得知道自己应该在何时选择放手。
You never know when you might need a Pal.
你永远不知道你何时需要一个好伙计。
Let them know when you are proud of them.
当你为他们感到骄傲的时候让他们知道。
How do you know when your life is in balance?
你如何知道你的生活何时达到和谐？
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