The gas main exploded and set fire to the house. 煤氣總管爆炸引起房子失火。
Returns to the palace, the small ring jubilant hugs these shrimp to give the jade meals room main pipe Li father-in-law to look. 回到宮裡，小環子興高采烈的抱著這些蝦去給玉膳房總管李公公看。
The plumber finds no pipe leaks and suspects a mains leak. 水管工沒有發現漏水的水管，懷疑是主管道漏水。
Obviously the main fault lies with the old directors. 很明顯，主要的責任在於老主管們。
Our main activity this week is planning this project. 我們這周主要的活動是策劃這個項目。
But the main reason for action this week was to forestall financial-market panic. 而本周之所以這麼做的主要原因是防止金融市場恐慌。
Or the pumps can discharge to a force main conveying wastewater under pressure to the treatment plant. 或崩可以將壓力污水干管中的廢水在壓力下輸送到污水處理廠。
With two segments and midsection inflexion of main pipes, the irregular well positions were well represented and the length of the total main pipes was shorten by a long way. 該種管網布置方式是將每個方向伸出的干管分成兩段，中間拐彎，能夠較好地體現注汽井分佈的不規則性。
The plumber finds no pipe leaks and suspects a mains leak. 水管工沒有發現漏水的水管，懷疑是主管道漏水。
Bypasses are used in steam service for warming up before the main line is opened and for balancing pressure where the lines are of limited volume. 旁路閥用在蒸汽操作中，用於在主管道開啟前對其進行預熱以及管道數量有限時平衡壓力。
