阴性的

Among Lewis structures having similar distributions of formal charges, the most plausible structure is the one in which negative formal charges are placed on the more electronegative atoms.

Among刘易斯结构有形式电荷的相似的发行，最振振有词的结构是消极形式电荷在更加电阴性的原子安置的那个。

The patients expressing ER have a better prognosis than ER negative patients,because of lower incidence of microsatillites,and extracapsular invasion,lowerPCNA LI and early stage.

3，由于ER阳性的肝癌多有完整的包膜、较低的子结节或卫星灶伴发率以及较低的PCNA标记指数，提示其预后要好于ER阴性的肝癌。

Results The appearance of behavior problems was difference if the children's four dimensionality was...

外化、内化、失调和能力四个维度为阳性与阴性的儿童中行为问题的发生均有差异；外化或失调维度得分高的儿童易出现攻击行为，不易出现抑郁行为；内化维度得分高的儿童易出现社会退缩；能力维度得分高的儿童不易出现破坏和社会退缩行为。

Of note, the hematuria frequently is intermittent and a negative urinalysis does not exclude bladder cancer.

需要指出的是，膀胱癌的血尿症状常是间歇性的。阴性的尿分析结果并不能排除膀胱癌的诊断。

Sexual behavior data were obtained by computer-assisted self-interview, and sera were collected semiannually for HIV and HSV-2 serology.

在1999到2003年美国的一项加强的行为干预中，通过收集4295名高危的HIV阴性的男性同性恋者来评估Ⅱ型单纯疱疹病毒(HSV-2)与人免疫缺陷症病毒的关系。

Sexual behaior data were obtained by computer-assisted self-interiew, and sera were collected semiannually for HI and HS-2 serology.

在1999到2003年美国的一项加强的行为干预中，通过收集4295名高危的HI阴性的男性同性恋者来评估Ⅱ型单纯疱疹病毒(HS-2)与人免疫缺陷症病毒的关系。

Ideally, a stray would be quarantined away from your existing pets until it has tested negative for any particularly common diseases or conditions like heartworm that could be transmitted to your pets, but it should at the very least be separated until it's seen a veterinarian.

理想的是，流浪犬将被隔离，远离您现有的宠物之前，化验结果呈阴性的任何特别常见的疾病或情况，例如心，可转发给您的宠物，但它应该至少是分不开直到看到一名兽医。

The donor in the study had a history of homelessness and alcohol use and was hospitalized for cerebral vasculitis. He had no known history of TB, and previous tuberculin skin tests had been negative.

这项研究中的捐赠者有无家可归与酗酒的病史，且因为脑血管炎住院；他过去没有已知的TB病史，且过去的结核菌素检验是阴性的。

Numerous bacteria, viruses, and protozoa have been implicated as etiologic agents for NGU, although definitive proof for causation with most of these agents is lacking. Therefore, managing cases with recurrent or persistent NGU is one of the most difficult problems in venereology.

在临床上常见的是迁延不愈以及衣原体、支原体均为阴性的NGU患者，对于该类患者的治疗已成为性病学上较为棘手的问题，并引发了人们对于其他病因研究的兴趣。

More recently, however,non-chlamydia trachomatis and non-mycoplasm NGU has been accounted for 50% of the total of NGU. Most patients with recurrent symptomatic or persistent NGU receive negative test results for chlamydia trachomatis and mycoplasm, and the cause of such NGU is unclear.

在临床上常见的是迁延不愈以及衣原体、支原体均为阴性的NGU患者，对于该类患者的治疗已成为性病学上较为棘手的问题，并引发了人们对于其他病因研究的兴趣。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失