积累

to accumulate / accumulation / cumulative / cumulatively

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

to accumulate / to involve or implicate (Taiwan pr. [lei4]) / continuous / repeated

tired / weary / to strain / to wear out / to work hard

surname Lei

rope / to bind together / to twist around