The energy is released by combustion on the application of a match.
能量通过点火柴燃烧释放出来。
《柯林斯英汉双解大词典》
2
The process is called combustion or oxidation, and the heat itself is a form ofenergy.
这个过程我们称之为燃烧或者氧化反应，同时热本身也是能量的一种形式。
3
Oil is found in relatively few places, and its energy density, pumpability and ease of use in internal-combustion engines makes it particularly well suited as a transportation fuel.