发热: to have a high temperature, feverish, unable to think calmly, to emit heat...
严: tight (closely sealed), stern, strict, rigorous, severe, father...
分寸: propriety, appropriate behavior, proper speech or action, within the norms...
懂得: to understand, to know, to comprehend...
课堂: classroom...
亲属: kin, kindred, relatives...
日语: Japanese language...
紧接着: immediately afterwards, shortly after that...
无济于事: to no avail, of no use...
敬礼: to salute, salute...
