英语翻译The filtrate was washed with acetone (25 ml).The combined

英语翻译
The filtrate was washed with acetone (25 ml).The combined cold filtrate and wash was diluted with cold dichloromethane (100 ml) and rapidly extracted with cold distilled water (100 ml) and twice with cold 1% NaCl aqueous solution (2 X 50 ml).
前面有一步是过滤,请翻译下,主要是 The combined cold filtrate and wash 这边不太懂