vivo 毒

dú poison; to poison; poisonous; malicious; cruel; fierce; narcotics

方案

fāng àn plan; program (for action etc); proposal; proposed bill; CL:個|个[ge4],套[tao4]

用

yòng to use; to employ; to have to; to eat or drink; expense or outlay; usefulness; hence; therefore

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