0 not worried or not interested, especially when you should be worried or interested -- （尤指應當擔心或感興趣時）不擔心的，漠不關心的，無興趣的
The baby was apparently unconcerned by the noise. 嬰兒似乎一點兒也沒受噪音影響。
Are you as unconcerned about the situation as you seem to be? 你對局勢真的像你表現出來的那樣漠不關心嗎？
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
再长的路，一步步也能走完，再短的路，不迈开双脚也无法到达。
