石油是物價上漲的主要原因。
Oil was the prime cause of the price surge.
這個地區疾病的主要原因是水不清潔。
A major cause of the disease in this area is unclean water.
日本公司有能力在發展與生產方面，較美國公司投資為多，是他們在半導體方面佔上風的一個主要原因。現在，英泰爾計劃在經濟不景氣時大量投資以壓倒弱小競爭者。
The ability to outspend American companies on development and production has been a big reason Japanese companies have made gains in the semi-conductor business. Now Intel plans to borrow a page from the Japanese by spending heavily through a recession to gain ground on weaker competitors.
