Last month she expiained to one of her classes about sound,and she decided to test them to see how还有successful she had been in her explanation的意思

问题描述:

Last month she expiained to one of her classes about sound,and she decided to test them to see how
还有successful she had been in her explanation的意思

上个月她向她的班级解释声音,还决定去验证她解释地是否成功。

上个月她给其中一个班解释了关于语音的问题,她决定对他们进行一次测试看看她的解释有多成功.