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to see through (a plot, lie, etc.); to penetrate into; to discover; to find out
相手のはったりを一瞬で見破った。
I saw through the opponent's bluff in an instant.
詐欺師の嘘を見破るのは難しくない。
It isn't hard to see through a fraudster's lies.
巧みに偽装された計画が捜査官に見破られた。
The cleverly disguised plan was seen through by investigators.