lacunala•cu•na /lə'kjuːnə,læ'-/ ( [复] lacunas或lacunae /-niː/)

n C正式 空隙(尤指稿件中的)缺漏部分；空白

• There were several lacunas in her letter where words had been erased. 她信中有几处字擦掉后留下的空白。

• I must fill a lacuna in my knowledge of history. 我必须填补我在历史知识方面的空白。