detn. 同义词
2 课后留校
3 阻止
holding preventive discouraging check let stop arrest stem prevention detention intercept inhibition throwback retard stoppage retardation kibosh stopping counteraction prevent foil hinder keep stay contain catch beat defense defend trap prohibit blanket spike discourage withstand forbid inhibit traverse deter preclude nick nip dissuade interdict debar untwist keep in check put the kibosh on put a crimp in