brown and burn

基本解释

Eat whole grains, like brown rice, and you'll burn lots of calories just digesting them.
吃整个的谷物，例如黑米，只需消化它们就会燃烧许多卡路里。
Natural resins are usually transparent or translucent yellow to brown and can melt and burn.
树脂通常是透明的，或者是半透明的黄色到棕色物，能够熔化和燃烧。
The pan must not be crowded. Enough air space must be left between each piece of food or it will steam rather than brown, and its juices will escape and burn in the pan.
不能一下子放太多食物到锅里，必须在食材间留出充足的空间，否则就变成蒸而不是煎了，而且食物里的汤汁也会跑出来，在锅子里蒸发掉。