translation.en: These are the kids who now, one semester in, I can put something on the board, totally new, totally foreign, and they'll have a conversation about it for three or four minutes more than they would have at the start of the year, which is just so fun.
translation.zh: 这些孩子现在已经学了一个学期， 我能在黑板上写下一些 全新的，完全陌生的问题， 他们能就此展开讨论， 这比他们在学年开始的时候长3，4分钟， 这真有意思。