1、Fly ash was a sort of industrial solid castoff which could be utilized again.
粉煤灰是一種可再資源化的工業(yè)固體廢棄物。

2、The factory has dumpaged its castoff into that river all along.
該工廠一直將其廢棄物傾倒在那條河里。

3、Snakes castoff and renew their skins.
蛇會(huì)蛻殼換新。

4、These "dirty snowballs" castoff gas and dust whenever they venture near the sun.
這些“臟雪球”在冒險(xiǎn)接近太陽時(shí)會(huì)丟出氣體和塵埃。

castoff翻譯