Old English in the literal sense; c. 1300 figurative, present participle adjective from burn (v.)). Burning question matches French question brûlante, German brennende Frage. Burning bush is from Exodus III. Burning glass is attested from 1560s.
权威例句
1. Because you're not burning calories, everything you eat turns to fat.
由于没有消耗卡路里,你吃的所有东西都会变成脂肪。
2. Mark was dragged from the burning wreckage of his car.
马克被人从他着火的汽车残骸中拉了出来。
3. Acid rain is not straightforwardly attributable to the burning of coal.
酸雨并非简单地由烧煤造成。
4. Emergency workers fear that the burning ship could slip its moorings.