on demand Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++on demand → on demand at demand1(3) whenever someone askson demand ●on deˈmanddone or happening whenever sb asks 一经要求◆Feed the baby on demand. 宝宝需要时再喂食。🔊◆on-demand printing of books书籍按需印刷See also demand