☊持久 ** C 
持 sustain, support / hold, grasp from: Universala Vortaro, Zamenhof
dum + + 
during + + while for whereas dum la postaj tagoj + + during the following days + + over the next few days dum la taglumaj horoj + + during daylight hours + + tra la sekvintaj jaroj + + during the following years + + #dum #during #dum la postaj tagoj #during the following days #dum la taglumaj horoj #during daylight hours #tra la sekvintaj jaroj #during the following years
während + 
在 + 