合同已于今日生效
The contract has come into effect today
以上为机器翻译结果，长、整句建议使用 人工翻译 。
合同已于今日生效，我们不能反悔了。
The contract comes into effect today, we can't go back on our word now.
youdao
The contract comes into effect today, we can "t go back on our word now."
合同已于今日生效，我们现在不能反悔了。
The contract comes into effect today; we can't go back on our word now.
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