他的第二个玩具

the second form───第二种形式

postsecondary───adj.中学后的，后中等教育的

second row───第二排

the secondary───次要的

the second house───第二宫

thirty-second note───三十二分音符

on second thought───进一步考虑后，仔细考虑后

He's in his second childhood playing with his grandson's toy trains.───他返老还童，玩儿他孙子的玩具火车。