拓扑空间

topological space (math.)

surname Tuo

to make a rubbing (e.g. of an inscription)

to expand / to push sth with the hand / to develop / to open up

(loanword) topology (math.) / topology of a network (computing)

to throw oneself at / to pounce on / to devote one's energies / to flap / to flutter / to dab / to pat / to bend over

lit. to rush at thin air / fig. to miss one's aim / to have nothing to show for one's troubles

empty / air / sky / in vain

to empty / vacant / unoccupied / space / leisure / free time

space / room / (fig.) scope / leeway / (astronomy) outer space / (physics, math.) space

between / among / within a definite time or space / room / section of a room or lateral space between two pairs of pillars / classifier for rooms

gap / to separate / to thin out (seedlings) / to sow discontent