hái / zi / bǎ / zhè / ge / xiǎo / wán / yì / fàng / zài / zhuō / shàng / yán / jiū / le / bàn / tiān / yě / méi / nòng / míng / bai

孩子把这个小玩意放在桌上，研究了半天也没弄明白。

The child put this little gadget on the table and studied it for a long time without figuring it out.