To feign ignorance; to play the fool; to pretend to be naive or foolish.
他为了避免回答那个棘手的问题，只好装痴作傻，希望大家能放过他。
To avoid answering that difficult question, he could only feign ignorance, hoping everyone would let him off the hook.
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To feign ignorance; to play the fool; to pretend to be naive or foolish.