填: 动词1.(垫平或塞满) fill; stuff 短语和例子用泥土填洞 fill a hole with mud; stuff up a hole with mud; 填枕芯 stuff a pillow; 每亩梯田我们得填上成千上万筐好土。 we had to fill up each mu of terraced fields with thousands of bask
活性: [化学] activity; active; activated◇活性肥料 active fertilizer; 活性酵母 active dry yeast; 活性粘土 [材料] activated clay; 活性染料 reactive dye; 活性溶剂 active solvent; 活性物质 [电子学] active material; active substan