asthma的意思是什么

　　例句：

　　Her son developed asthma when he was two.

　　她的兒子兩歲時患了哮喘。

　　He suffers from asthma.

　　他患有哮喘。

　　It had brought on an attack of asthma.

　　這引發(fā)了哮喘。