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Apparently, the approximate controllability doesn"t hold for generally linear parabolic equations with bounded control. It doesn"t hold for the semilinear heat equations presented there,either. Then, it is proved by analyzing its" solutions that no matter how long the time T is , there are targets that can"t be approximated by the solution of heat equation with Dirichlet boundary conditions;If a given target satisying certain conditions can be reached by the solution of heat equation .

本文先针对两个具体的半线性热方程系统证明了控制加约束后系统是不能控的；然后通过分析方程的解，对带位势及Dirichlet边界条件的热方程系统，无论时间多大，都存在不能控的目标；文中还证明了满足一定条件的目标可达。

Secert love is holy He just considers the other sidehappiness if there is pain,you should endure yourself liking somebody won't bring your pain while loving somebody,you may suffer a long paining however he'given me the most joy in the world Missing somebody doesn't mean each other every day doesn'tmean possess or destory each other yearn day and night but that you bring him to your mind now and again you will worry about her if you can't hear her's voice.You will miss th-e time you spent together when you are outward alone If I could catch a rainbow If I could catch a rainbow Icould do just for you And share with it's beauty Onthe days you are felling blue IF I could build a mountain you ould call you very own A place to find serenity A place to be alone If I could take your troubles Icould toss them into the sea out all these things I'm finding Are possible for you I can't build a mountain or catch a rainbow fair Butlet me know what I know best A friend that's always there

Secert认为对方是幸福，如果有痛苦，你应该忍受自己喜欢有人不会带给你痛苦时，你可能会爱一个人却'given痛很长一段时间我在世界上最快乐失踪的人并不意味着天天彼此根本'tmean拥有或摧毁对方向往日夜，但是你把他带到你的头脑，你必再担心她，如果你不能听到她的声音你就会错过你花了这么多时间在一起的经验，当你是外在的孤独，如果我能捕捉彩虹，如果我能捉彩虹我能做的只是为了你和大家分享它的美恒天你感觉蓝色的，如果我能够建造一座山，你叫你的阿布地方找到了平静一个地方独处，如果我能拿你的烦恼扔进海里我会出所有这些事我是你的话，我不会建造一座高山或捕捉彩虹公平，我知道我知道铺路最好的朋友，永远存在 Powered by Youdao

Just because someone doesn't love you the way you want t hem to, doesn't mean they don't love you with all they have.

爱你的人如果没有按你所希望的方式爱你，那并不代表他们没有全心全意地爱你。

Jus 7 t because someone doesn't love you the way you want them to, doesn't mean they don't love you with all they have.

爱你的人如果没有按你所希望的方式来爱你，那并不代表他们没有全心全意地爱你。

And other dogs are fully aware of this rule. I never yell at him, because he is so cleaver that he recognizes what he did wrong just with the tone of my voice. The Tosas are the kind of dog that doesn't put up with abuse or punishment without reason. He is quite tolerant with my friends. They can pad him but will never become his friends. And the other great thing about him is his protectiveness towards my little sister. I think that there isn't a person in the world that could hurt my sister while he is watching her. It is a perfect guard dog. We don't even lock our house anymore, because we know that we are perfectly safe with him. The other great thing about this breed is that it doesn't bark.

我从来不吼他，因为他是如此的聪明甚至可以从我说话的语调中明白他什么做错了，所以棍棒伺候用在土佐身上是太过奢侈了的，他很能忍受我的朋友，不管他们怎么逗他玩，他都和能配合，但是总是显得很难把我的朋友当成他的呵呵，还有我现在用他来护卫我的小妹妹，我相信当他看护着我妹妹的时候没有人敢动我妹妹一根毫毛，他是一只完美的护卫犬，我们家甚至经常都不用锁门的，因为我们知道有他我们很安全，还有在这两年的时间内，我只听过他叫了两次，但是每次叫的时候都让人毛骨悚然，甚至让人血管里的血液结冰。

"No, no, no! That's a snake."Mum doesn't look a bit like this. She doesn't slither about and hiss. She doesn't curl round a nest of eggs.

不，不，不，那是条蛇，我妈看起来一点都不像它，她不会这样滑行和发出嘶嘶的声音，她不会这样缠绕一窝的蛋。

This is why I make a pledge, here and now, to repay you in full, no questions asked, if ever before the end of the year your life doesn't take a completely NEW turn, if money doesn't come flowing in, and if love doesn't swathe you in its thousands of graces.

这就是为什么我做出的承诺，现在在这里，以报答你完全没有问，如果以往在今年年底前你的生活并没有采取完全新的转折，如果钱不会流入，如果不爱你裹在其成千上万的青睐。

He taught me that a real man doesn't take, he gives; he doesn't use force, he uses logic; doesn't play the role of trouble-maker, but rather, trouble-shooter; and most importantly, a real man is defined by what's in his heart, not his pants.

他教我真正的男人不取，他施与；他不用武力，他用逻辑；不要玩麻烦制造者的角色，而是，麻烦的清除者；而最重要的，一个真正的男人是以他的心有什麼来定义，而非他的裤子里。

It doesn't matter what colour Or where abouts you are This world that we have is for everyone So don't you give up We'll pass the test of time Coz I can't make it through Without you It doesn't matter what colour Or how rich you are This world that we have is for everyone So don't let it down We'll pass the test of time Coz I can't make it through Without you Flipping through the channels I see a broken man Through his devastation He still smiles through the broken glass Coz he knows it's time We are part of something Something beautiful see the light

不要紧什么颜色或者你了解我们这个世界上，我们对每个人都所以，你不放弃我们将通过时间的考验怎么把我过不去没有你不要紧什么颜色或者你是如何丰富这个世界上，我们对每个人都因此，不要让它下来我们将通过时间的考验怎么把我过不去没有你翻阅渠道我看到一个破碎的人透过他的破坏他仍然微笑从破碎的玻璃他怎么知道是时候我们事情的一部分美好的事物看到光明

Olympic Games doesn't need your personal tendency to politicalize all sporting activities n this way, the Whorld doesn't need, China doesn't need and Beijing neither!

你的体育政治化倾向，奥运会是不需要的，世界是不需要的，中国是不需要的，北京也是不需的！

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。