查询词典 useless

Marking the door with another fiery cross as Harry replaced the now‐useless handle of Sirius.s knife in his pocket.

"不会的，哈利在梦里能打开所有想打开的门，"赫敏说，在门上又做了一个燃烧的大叉，哈利把已经毫无用处的刀把收进口袋里。

Firstly, those useless to classify texts are filtered according the category document frequency distribution difference of each feature; and then in order to overcome the limitations of TF-IDF weighting formula a novel weighting formula called TF-CDF is presented . Calculate the weight of each feature according to TF-CDF and build the Vector Space Model for the entire corpus. To select significant features, a feature selection approach based on Variable Precision Rough Set is also proposed and implement with some SQL sentences combining the definitions of VPRS with the advantages of SQL sentences.

该文首先根据特征词的类别分布差异进行特征过滤；然后，分析传统的权值公式TF-IDF的缺点，采用改进的权值计算公式简记为TF-CDF，依据TF-CDF公式计算每个特征词的权值，生成文档集的向量空间模型VSM；接着，提出了一种基于可变精度粗糙理论的特征选择进一步选择对分类贡献度大的特征，并用SQL实现。

This hapless fish, sometimes called "poison flute", is wretchedly equipped for locomotion; his useless tail and a stiff tubular body are handicaps for which he compensates by wildly agitating his pectoral fins to move forward and backward.

这种不幸的鱼，行动不方便得令人可怜。它那没有用处的尾巴和那僵硬的管状的身体成为了它四处游动的障碍，于是它只能激烈地鼓动着小鳍以便游来游去。

If you don't exercise your brain, it will get flabby and useless.

如果你没有锻炼你的大脑，他也会象你的身体一样变得慵懒和乏力。

I know his intention of flattery,but it is useless to me.

我知道他想要拍我马屁，但我才不吃那一套。

But there are many still flout the law students for many reasons, but I think there are a lot of people believe in "useless study."

可是有很多同学还是明知故犯，原因有很多，但我想，当中有很多人信奉"读书无用论"。

Because there are a lot of software out there that are full of fluff and useless material.

因为有很多软体上，充满了绒毛、无用的材料。

I also tried, it is just birth babies in the fourth day, on the faster more milk, your baby will also not how to eat, eat small, the results of smoking are smoking are not urgent now, a breast feels a knot, What Fomentation, are tried by touch, that is, useless, pain of his wits, to begin the fourth day have a little bit of fever, was not discharged, asked the doctor how to do at that time there were two hospital nurse is designed to teach us if breast-feeding and breast-feeding correctly solve the problem, see my way I try to teach a method, but many people do not want to, but most do not harm approach: call your husband as much as possible the absorption empty breasts, coupled with the heat, probably three or four times, milk block will go away.

我也试过，那是在刚生完孩子第四天，上奶上得快又多，孩子又还不怎么会吃，吃不多，结果吸都吸不急，乳房摸上去一个一个结，什么热敷，按摸都试过了，就是没用，痛得要命，到第四天时开始有一点点发烧，当时还没出院，问医生怎么办，当时那个医院有两个护理师是专门教我们如果正确哺乳和解决哺乳问题的，看到我这样就教我试试一个方法，不过许多人不愿意，但是最没有伤害的方法：叫你的老公尽量的吸空乳房，再加上热敷，大概三四次后，乳块就会消失的。

Father is a teacher, and my mother is a worker, the sun hong2 lei2 is that grassroots actors, he said: I was born in a family, my goal of grassroots crowds are my play, they love you, take care of you, and have done the best actor award winning actor., are not ripe, this is your is yours, not your fondling is useless.

父亲是教师，母亲是工人的孙红雷，认定自己是草根演员，他说：我出身在草根家庭，我的目标是有观众看我的戏，他们爱你、关怀你，就行了。影帝不影帝的，都是水到渠成的事儿，该是你的就是你的，不是你的再折腾也没用。

She thought him insipid, silly, stupid, useless, foppish, displeasing, impertinent, extremely ugly.

她觉得他庸俗、笨拙、愚蠢、无用、浮夸、讨厌、无礼并且还非常丑。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷