obide by, observe, comply with在英语合同中都表示“遵照”“遵守”。comply with的主语通常是sth.，而observe和obide by的主语通常是sb.

例：The delivered equipment shall be installed and tested by Party B andshall fully comply with the technical requirements and processing quality ofthe contract.(所交付的设备应由乙方安装调试，应完全符合本合同的技术要求和工艺质量。)

The Contractor shall observe and abide by all applicable laws, rules andregulations in connection with the Work. (承包人必须遵守和服从与该工程有关的一切适用法律规章和条例。)