双边 shuāngbiān bilateral
How to remember 双边: 双 pair + 边 side = bilateral.
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How it is used
- 'Bilateral, between two parties (esp. countries)' - 双边关系 (shuāngbiān guānxì) bilateral relations, 双边贸易 bilateral trade.
- A diplomatic/trade term; the contrast set is 多边 (duōbiān, multilateral). 双边/多边 distinguishes two-party from many-party arrangements.