vacuum 名词复数:vacuums, vacua 过去式:vacuumed 过去分词:vacuumed 现在进行时:vacuuming 词形变化: 名词复数: vacuums | 动词过去式: vacuumed | 动词过去分词: vacuumed | 动词现在分词: vacuuming | 动词第三人称单数: vacuumes | 词义辨析: 同义: n.真空 void vt.清扫 sweep clean 同义参见: bubble absence nothing