原因之一是当症状出现时很多人都缓慢地寻求帮助。
One reason is that many people are slow to seek help when symptoms arise.
当症状出现的时候，你所需要做的最后一件事就是找人帮忙。
By the time symptoms hit, the last thing you'll want to do is run errands.
这种潜在致命的疾病可以得到很好的治疗，但是当症状不明显时很难确诊。
Good medical treatment is available for the potentially deadly disease, but the condition in milder forms can be difficult to diagnose.
你的亲友需要和医生配合来制定方案，知道当症状到一定程度时需要做什么。
Your loved one and his or her doctor or mental health professional need to work together to come up with a plan for what to do when signs and symptoms reach a certain point.
然而，在年轻患者，特别是运动员患者中，当症状持续一定时间以致于影响生活质量，这种情况下有手术指征。
Surgery, however, is indicated when symptoms persist beyond a reasonable time affecting the quality of life in young patients, particularly the athletic population.
胰腺癌有时会成为“无声杀手”，因为一般情况下，它不会引起一些症状，当症状出现时，往往没有特殊特征，而且多种多样。
Pancreatic cancer is sometimes called a "silent killer" because generally it does not cause symptoms, and when symptoms do arise, they are usually non-specific and varied.
不管是经历过精神病的个体，还是他们的家庭成员与朋友，大约有百分之二十的人感到当症状开始发生时，“没有人”能提供帮助。
Approximately 20 percent of both individuals who experienced psychosis and their families and friends felt that "no one" helped when the onset of symptoms occurred.
很多医生都认为：当症状变得严重后用药已经很迟了，所以在目前，很多研究人员开始对部分人群进行精神认知缺陷的检测，以期能够提早预防阿氏病的发生。
Many doctors believe drugs are being given too late, after symptoms are severe, so researchers more recently have started testing some in people with mild cognitive impairment.
接下来的几天，他的症状全都回来了，当他再度喝山竹果果汁后，他的症状又消失了。
The following day all of his symptoms returned and were once again relieved by mangosteen juice.
当她呆在WiFi信号覆盖的地方时，她就会有咳嗽、心脏病和剧烈的头痛等症状。
She had a cough, heart trouble and great pains in her head when she stayed at the places covered with WiFi signals.
此外，当把这种抗体注射到黑猩猩身上时，它能抑制鼻病毒的生长，而在人类身上，它能减轻感冒症状的严重程度和持续时间。
Moreover, when the antibody was given to chimpanzees, it inhibited rhinoviral growth, and in humans it lessened both the severity and duration of cold symptoms.
当栓子的数量超出心脏的承受能力后，就会引起气促或胸痛（心绞痛）等症状。
Blockages can become severe enough to cause symptoms such as shortness of breath or chest pain (angina).
通常当病人开始跛行时，症状在最初几个月会加重。
Often when patients develop claudication their symptoms can be worse in the first few months.
经过24小时后，把这只老鼠放在同样的盒子里，当实验用的是幼鼠时，它表现出了和24小时前一样的症状，浑身发抖地龟缩在盒子的一角。
Young mice, encountering the same box 24 hours later, remembered the foreboding place and froze in fear.
有种可能，就是当患有焦虑症的患者出现症状时，他们很有可能去就诊，因此被诊断为中风或是心脏病突发的可能性也会更大。
It could be that patients with anxiety are more likely to go and see their doctor when they have symptoms and therefore are more likely to receive a diagnosis of stroke or heart attack.
当孩子长大到一定年龄之后，症状和治疗方式都会有很大的不同。
As children grow older than my patient, behavioral and other treatments can make a big difference.
当病毒攻击幼儿或老人时，流感症状可能很严重甚至是致命的。
Flu symptoms can be severe, and even fatal, when the illness strikes young children or the elderly.
事实：打鼾可能是无害的，但它也可以是威胁生命的睡眠障碍的一个症状，这一睡眠障碍叫做“睡眠呼吸暂停”，特别是当它伴有严重的白天的嗜睡症状的时候。
Fact: Snoring may be harmless, but it can also be a symptom of a life-threatening sleep disorder called sleep apnea, especially if it is accompanied by severe daytime sleepiness.
昨天，当这架飞机降落在希思罗机场后，一位未被透露姓名的男子因出现流感样症状被送入医院。
The man, who was not named, was taken to hospital in London yesterday with "flu-like symptoms" after landing at Heathrow.
在关键的计算机应用程序的生存期中，日志记录是一件非常重要的活动，特别是当故障的症状并不十分明显时。
Logging is a very important activity in the lifetime of critical computer applications, especially when symptoms of failures aren't readily apparent.
但是在他的一生中，爱因斯坦都有轻微模仿言语的症状，尤其是当大家拿他取乐的时候，他都会自言自语的把短语重复两到三遍。
But throughout his life, Einstein had a mild form of echolalia, causing him to repeat phrases to himself, two or three times, especially if they amused him.
良好的接触者追踪和管理有助于确保当向其他人传播的危险最大时在症状出现之前将可能病例隔离。
Good tracing and management of contacts helps to ensure that possible cases are isolated prior to the onset of symptoms, when the risk of transmission to others is highest.
当要他们描述一下当前的症状时，他们说的模糊不清。
When it came to descriptions of their presenting problems, things got a little vague.
当失眠症状在一星期出现数次，影响个人日常生活的时候，就应该与适当的健康专家讨论对这个问题了。
When insomnia symptoms occur more than a few times a week and impact a person's daily life, the symptoms should be discussed with the appropriate health care provider.
1918年的那场流感大流行期间，当病毒首次在春季出现时，引起的症状相对轻微，但是到了那年秋天，它卷土重现时，却来势更猛。
In the 1918 pandemic, the virus was relatively mild when it first appeared in the spring, but it came back with a vengeance in the fall.
当老伴儿的老年痴呆症状加深时，是他的悉心照顾使得她的症状慢慢消失。
He took care of her as her dementia deepened and she slowly faded.
当老伴儿的老年痴呆症状加深时，是他的悉心照顾使得她的症状慢慢消失。
He took care of her as her dementia deepened and she slowly faded.
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