Cov Kws Ua Haujlwm Tsis Muaj Ciam Teb
5.0 tawm ntawm 5 hnub qub (raws li 1 kev tshuaj xyuas)
Lub sij hawm Engineers Tsis Muaj Ciam Teb (EWB; Fab Kis: Ingénieurs sans frontières, ISF) yog siv los ntawm
Tag: engineering tej yaam num