呼吸道症状的英文：
respiratory symptom

Some respiratory symptoms can be the forerunners of asthma.
一些呼吸道症状可能是哮喘病的先兆。

CBPP is manifested by anorexia, fever and respiratory symptoms, such as dyspnoea, cough and nasal discharges.
CBPP的症状表现为厌食、发热和呼吸道症状，如呼吸困难、咳嗽和流鼻液。

The respiratory tract is an important portal of entry for respiratory viruses
呼吸道是呼吸道病毒入侵的重要门户。

It is caused primarily by allergy or respiratory infection.
若从病因论，哮喘可分为过敏反应性、炎症性和神经性。

At necropsy the respiratory system is severely affected
剖检可见呼吸系统有严重感染。

A cold is an infection of the upper respiratory tract.
感冒是上呼吸道的感染。

Respiratory diseases,eg bronchitis,asthma
呼吸道疾病(如支气管炎、气喘)

withdrawal symptoms
ph.1. 戒毒过程中产生的病症(诸如盗汗、恶心等等)

Look out for symptoms of depression.
留心看有无抑郁症状。

What are the symptoms to look out for?
有哪些症状需要注意？

Because symptoms are nonspecific, they are often ignored.
因为症候不止一种病因，所以经常被忽略。

a sign; an omen; a portent; an augury; a symptom
征兆