translation.en: Now, spray foam is an excellent insulator -- it fills in all the cracks -- but it is pretty high embodied energy, and, sprayed-in cellulose or blue jeans is a much lower energy alternative to that.
translation.zh: 当下，喷射式泡沫是非常好的隔热材料，它可以填入所有的地方， 但是它非常耗费能量。 喷洒式纤维素或者牛仔裤布料 是可选用的低耗能替代品。