咳嗽: to cough...
敷衍: to elaborate (on a theme), to expound (the classics), perfunctory, to skimp, to botch, to do sth half-heartedly or just for show, barely enough to get by...
随后: soon after...
额外: extra, added, additional...
发动: to start, to launch, to unleash, to mobilize, to arouse...
公益性: commonweal, public welfare...
课堂: classroom...
但: but, yet, however, only, merely, still...
去除: to remove, to dislodge...
开办: to open, to start (a business etc), to set up...
