a promise of unconditional payment
...; (2) A progress report of the preparation work; (二)无条件支付的承诺; (2) a promise of unconditional payment; (二)筹建工作报告; (2) A report on work of the preparatory establishment; ..
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a promise of unconditional payment
无条件付款的承诺
以上为机器翻译结果,长、整句建议使用 人工翻译 。