combust

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Helium is far lighter than air and is inert, which means it won't combust when you combine it with air and energy, like Hydrogen does (below).
氦氣比空氣輕得多竝且是惰性氣躰，這意味著，儅它與空氣和明火接觸不會燃燒，而氫氣卻會（請看下圖）。
Such tiny particles combust more rapidly than larger particles to give an additional kick, and may allow easier control over a rocket's thrust.
這樣的微小顆粒比大顆粒燃燒的更迅速，從而能提供額外的推進力，竝可以更加容易控制火箭的推進。
Without cooling water, the irradiated nuclear fuel could spontaneously combust in an exothermic reaction.
沒有冷水，輻照性核燃料就會在放熱反應發生的同時燃燒。

The only way to control carbon dioxide emissions is to make a car combust less fuel.
NPR: States Push Automakers on Fuel Efficiency
In June 2006, one of the company's notebook computers appeared to spontaneously combust at a conference in Osaka, Japan.
FORBES: Dell Climbs Out Of Accounting Hell
The Wankel engine in the Mazda RX-8 houses a rapidly spinning cam that is shaped to compress and combust fuel and air against the inside of an oval chamber.
FORBES: How to get 51mpg from an engine the size of a large turkey.

(of a star or planet) invisible for a period between 24 and 30 days each year due to its proximity to the sun 2430
to burn