main fuel

• 主要燃料

main fuel的用法和样例：

例句

1. In the next century, nuclear energy could overtake oil as the main fuel.
   下个世纪，核能可能超过石油成为主要燃料。
2. The day will finally come when we no longer rely on coal and oil as our main sources of fuel.
   我们不再依靠煤和石油作为主要燃料来源的日子终究会到来。