當學習任何系統時

當 dang ˉ dangˋ

While, When, During, Undertake, Manage, Accept, Work as, Use As, (Dang4), Pawn, Mortgage, Pledge, Consider as, Proper, Appropriate

學習 xueˊ xiˊ

(Learn, Study, To learn, To study) To study, Study , Studies , Studying , Studied , To learn, Learn , Learns , Learning , Learned

任何 renˋ heˊ

(Any, Whatever, Whichever) Any, Whatever, Whichever

系統 xiˋ tongˇ

(System, Systems) System, Systems, A system, The system, The systems

時 shiˊ

Time, At that time, Fashionable, Sometimes, Era, Season, Epoch