并保证施工质量，否则，除对乙方按4.2.20条处罚外，同时赔偿材料等费

并保证施工质量，否则，除对乙方按4.2.20条处罚外，同时赔偿材料等费用，并重新返工，严重时责令乙方退场。

結果 (英文) 1:

And ensure the construction quality, otherwise, in addition to party b 4.2.20 penalties and compensation for material costs and rework, which ordered b exits.

結果 (英文) 2:

And to ensure construction quality, otherwise, in addition to B by Article 4.2.20 penalties, and compensation for material and other costs, and rework, serious ordered Party withdrew.

結果 (英文) 3:

And ensure the quality of construction, otherwise, except for Party B in accordance with article 4.2.20 penalties, compensation and other costs of materials, and rework, serious when Party B shall be ordered to exit.