Nctm
abbr. National Council of Teachers of Mathematics <美> 全國數學教師理事會
??? 情景例句
Don't forget about the bet.
別忘了打賭的事。
The best horse needs breaking,and the aptest child needs teaching.
最好的馬兒要人馴，最伶俐的孩子要人訓。
Yes, a little.
是的，有點兒。