中英释义：
双语例句
本协定于签字后立即生效.
This agreement shall enter into force immediately upon signature.
本合同一经双方签字后立即生效.
This contract will be effective after being signed by both parties.
重点词汇
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签字
sign; autograph; affix one's signature; signature; signing
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立即生效
come into force immediately