There are also a number of medications that can reduce the symptoms of asthma.

还有一些药物可以减轻哮喘的症状。

Some Australians started complaining of burning eyes and the symptoms of asthma and a haze has settled over Australia's largest city.

一些澳大利亚人开始抱怨眼睛的灼热感和哮喘症状，并且烟雾已经席卷了澳大利亚最大的城市。

These effects lead to this symptoms of asthma.

这些影响导致这种哮喘症状。

That said, symptoms of asthma include coughing, a feeling of chest tightness, dyspnea, or difficulty breathing, and wheezing, or a high-pitched whistling sound that usually happens during exhalation.

也就是说，哮喘的症状包括咳嗽、胸闷、呼吸困难、喘息，即呼气时伴随高调吹哨音。