Eng: In vain

徒

Apprentice, Disciple, Empty, Empty, Follower, Foot, Futile, Gang, Go on, Group of, In vain, Infantry, Merely, Only

空

Air, Bare, Deserted, Empty, Have free time, Hollow, In vain, Sky, Space

白

All for, Blank, Empty, Free, In vain, Pure, White

無效

In vain, Invalid, Null, To no

卻徒勞無功

In vain

束手無策

Helplessly, Hopelessly, In vain, Vainly