不必

The approach taken by a coursebook towards learning strategies may not be explicit but certain leaning styles and strategies will be promoted in the book, explicitly or implicitly , and it is important to identify what they are and how they are put forward.

学习一课程的学习策略可以不必明示，但一些学习风格和学习策略在书中明白的或含蓄的有所涉及。并一定讲明它们是什么及怎么应用。

Bridal couturier Frederick Lee said:'She proves that you don't need to have a pencil-thin figure in order to look great in a cheongsam.

新娘女装设计师Frederick Lee说"她证明了一点，为了穿出旗袍的韵味，你不必保持一个干瘪的身材。"

The algorithm can be applied to tracking nonlinear and maneuvering targets without knowledge of the certain noise covariance in advance.

该算法可以用在非线性和机动目标跟踪问题中，不必预先知道准确的噪声方差。

But nowadays people even bother to dress up the dress has also been deal with lazy rules, do not worry about the coveralls with pants, combining different from the false, and even too lazy to tie them also they can wear slippers through the streets of the.

但现在人们甚至懒得打扮打扮也与懒惰的规则处理，不必担心与裤子的工作服，将来自不同的错误，甚至懒得配合他们也通过他们可以穿的拖鞋在街上。

Then i won't have to be responsible for my cowardice!

这样我就不必为了我的懦弱负责！

There was the honest cockrobin, the favorite game of stripling sportsmen, with its loud querulous note; and the twittering blackbirds flying in sable clouds; and the golden_winged woodpecker, with his crimson crest, his broad black gorget, and splendid pumage; and the cedar bird, with its red_tipt wings and yellow_tipt tail, and its little monteiro cap of feathers; and the blue jay, that noisy coxcomb, in his gay light_blue coat and white underclothes; screaming and chattering, nodding and bobbing and bowing, and pretending to be on good terms with every songster of the grove.

瞧那憨厚的知更鸟，嬉戏之余不忘引吭高歌，可真是精力旺盛的表现；还有那叽喳啁啾的黑鹂，层云中把双翼展起；还有金翅的啄木鸟，红冠在顶，黑斑绕颈，红得鲜艳，黑得黝亮，更不必说一身华丽的羽毛；看那雪松鸟，双翼末梢一抹红，俏尾顶端一点黄，更兼有那蒙蒂罗小羽帽；别忘了蓝松鸦，噢，他可真是个花花公子，穿着一身明快的亮蓝色外套衬着白色的内衣，四处叫嚣闲聊，一边还不时地点头哈腰，好像他和林子里的歌手们都很熟似的。注：有不少意译，个别可能不太准确，但尽力了，希望能帮到你。

It isn't necessary.i am afraid you'll cratch my car.

不必了。我怕你弄花我的车。

A "participant" is a person who is criminally responsible for the commission of the offense, but need not have been convicted.

"参与者"是刑法上应为实施犯罪行为负责的人，但不必是已经被定罪的人。

I see you've got another car. At least you didn't have to pay much for that old crock!

我知道你又买了一辆汽车，至少你不必花很多钱在那辆破旧得不能再用的车上了！

So hang on in the cradle, every 宝宝 has a few dozen centimeters away more toys are likely to be heard and not see that do not have to worry so become a cross-eye. extension

所以挂在摇篮上、隔宝宝有几十厘米远的玩具很可能更多是被"听到"，而不是看到，不必担心因此变成"斗鸡眼"。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。