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無駄， 徒， むだ， ムダ
1. futility, waste, uselessness, pointlessness, idleness
徒劳，浪费，无用，无意义
と
1. if, when
2. and
3. with
4. used for quoting (thoughts, speech, etc.)
5. promoted pawn
6. indicates a question
表示引用
も
1. too, also, in addition, as well, (not) either (in a negative sentence)
2. both A and B, A as well as B, neither A nor B (in a negative sentence)
3. even, as much as, as many as, as far as, as long as, no less than, no fewer than
4. even if, even t...
tbd
