-----------------------------------
なきゃ， 無きゃ
1. if (it) doesn't exist, if there is no ..., if (one) doesn't have ...
2. if not ..., unless ...
3. have to ..., must ...
必须……；如果不……，除非……；如果（它）不存在，如果没有……，如果（某人）没有……
-----------------------------------
だって
1. after all, because
2. but
3. even
4. too, as well, also
5. they say, I hear, you mean
tbd
