Each side must observe the contract.

合同双方都必须遵守合同。

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We will observe the terms of the contract.

我们将履行合同中的各项条款。

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We used the therapia group and contract group to observe the clinic effect.

设治疗组、对照组，观察临床疗效。

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We used the therapia group and contract group to observe the clinic effect.

设治疗组、对照组，观察临床疗效。

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