Being in love must have addled your brain.
坠入爱河必已使你神魂颠倒。
人是要有一点精神的。
"She must have a prize herself, you know," said the Mouse.
“可她自己也该有个奖品呀。”老鼠说。
Judging by your last letter, you must have a very wonderful time.
从你上封信看，你一定度过了一段精彩的时光。
In order to ensure success we must have a complete and thorough plan.
为了保证成功，我们必须要有一个周密的计划。
To go in for technical innovation, one must have the fearless spirit of a pathbreaker.
搞技术革新就要有一股不怕困难的闯劲。
Each Lego brick must have that perfect grasp, strong enough to hold onto another brick but easy enough for a child to pull apart.
每一块乐高积木都必须有完美的抓力，既要足够牢固可以抓牢另一块积木，又要足够容易，让孩子们可以把它拉开。
For young people to use their right to vote wisely, they must have an understanding of the needs of society, and they must also learn how politics work.
要让年轻人明智地使用他们的投票权，他们必须了解社会的需要，也必须了解政治活动是如何运作的。
Zheng Aiqiang, a "memory athlete" on TV show Super Brain, can remember 2,660 numbers in just one hour! You would think people like him must have special brains.
郑爱强，电视节目《超级大脑》中的“记忆运动员”，可以在一小时内记住2660个数字！你会认为像他这样的人一定有特别的头脑。
The wheels of language run so smoothly that one rarely bothers to stop and think about all the resourcefulness and expertise that must have gone into making it tick.
语言的齿轮运作得如此顺畅，以至于人们几乎从未想过要停下来思考那些能使语言变得更加优美的智慧和专业知识。
你这次旅行一定很开心吧！
你一定学得很好！
The Dodo said, "EVERYBODY has won, and all must have prizes."
渡渡鸟说：“每个人都赢了，每个人都要得奖。”
你一定很高兴！
她跑得一定很快！
You must have spent ages doing this!
你一定花了很多时间做这件事！
They must have confused me with my twin brother Rod.
他们一定把我和我的孪生兄弟罗德搞混了。
She must have had a happy dream, for she was smiling in her sleep.
她一定做了一个愉快的梦，因为她在睡梦中微笑着。
You must have managed to escape, you clever, ingenious, intelligent Toad!
你一定是设法逃出来的，你这聪明机灵的癞蛤蟆！
They talked of Cinderella, and Tootles was confident that his mother must have been very like her.
他们谈到了灰姑娘，图图相信他的母亲一定很像她。
When I mentioned this change to one of his teachers, she joked that the coat must have changed him.
当我向他的一位老师提到他的变化时，她开玩笑说，一定是这件外套改变了他。
When I applauded, I guess I was showing my appreciation for his skill, the hours of practicing he must have put in.
当我鼓掌的时候，我想我是在表达对他技巧的欣赏，他一定花了很多时间来练习。
That dress must have cost a bomb!
那条连衣裙所费不菲吧！
This must have been one of the proudest moments of his busy and hard-working life.
在他忙碌、勤奋的一生中，这可能是他最自豪的时刻之一。
If you want good relationships, you must have the confidence to be self-assertive when required.
如果你想要发展好的关系，在需要的时候必须要有自信，拿出主见来。
I must have always known reading was very important because the first memories I have as a child deal with books.
我一定是一直知道阅读是非常重要的，因为我小时候的第一个记忆就是在和书打交道。
One must have one's own opinions and not drift with the current.
遇事要有主见，决不能随波逐流。
It's a sculpture carved from the tusk of a mammoth—it must have been towards the end of the tusk, because it's slim, slightly curved.
这是一件用猛犸象的象牙雕刻而成的雕塑——肯定是象牙接近尾端的部分，因为其形状纤细、略呈弧形。
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