罩: Ⅰ动词(遮盖; 扣住; 套在外面) cover; overspread; wrap 短语和例子棉袄外面罩着一件蓝布褂儿 wear a blue dustcoat over one's cotton-padded jacket; 城市上空罩上了一层烟雾。 the sky over the city was overspread with a heavy smog. 迷雾笼罩山
真空: [物理学] vacuum; empty space; vacuo 短语和例子高真空 fine [high; perfect] vacuum; 极高真空 extreme high vacuum; 未尽真空 partial vacuum; 产生真空 produce a vacuum; 制造一个权力真空状态 create a power vacuum; 真空包装 vacuumiz
