in a way that involves two groups of people or two countries 双方的;双边的 to meet/negotiate bilaterally 双边会面/谈判
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medical )医学 in a way that involves two parts or sides of the body or brain (身体部位)双侧的,对称的;(大脑)两半球的 This disorder usually occurs bilaterally. 这种疾病通常发生在双侧。