堆积木

to play with stacking blocks

to pile up / to heap up / a mass / pile / heap / stack / large amount

to pile up / to heap / accumulation

to amass / to accumulate / to store / measured quantity (such as area of volume) / product (the result of multiplication) / to integrate (math.) / to solve (or integrate) an ordinary differential equation (math.) / old / long-standing

toy building blocks

(bound form) tree / (bound form) wood / unresponsive; numb; wooden