vacuum
/ˈvækjuːm/
n.
一句话记住
真空;真空吸尘器(口语)
释义与例句
n.
真空
a space that is completely empty of air or any other matter
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Sound cannot travel through a vacuum.
声音无法在真空中传播。
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The machine removes air from the bag to create a vacuum.
这台机器把袋中的空气抽出,形成真空。
展开其余 1 条例句
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The experiment showed how a feather falls in a vacuum.
这个实验演示了羽毛在真空中如何下落。
n.
真空吸尘器(口语)
a vacuum cleaner
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She ran the vacuum over the carpet before the guests arrived.
客人到来之前,她用吸尘器把地毯吸了一遍。
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The vacuum is kept in the cupboard under the stairs.
吸尘器放在楼梯下的柜子里。
展开其余 1 条例句
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He replaced the vacuum because the old one had lost suction.
因为旧的吸尘器吸力不足,他换了一台新的。
词源与构词
记忆钩子
vacuum 的拼写里有两个 u,容易漏写;in a vacuum 常作比喻,表示“脱离现实环境”。
词族与关联词
同根词(同一个词根长出来的词)
词族(同一词根派生出的不同词性或形式)
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vacuum cleaner 真空吸尘器书面表达通常用完整的 vacuum cleaner,口语中常缩略为 vacuum。
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vacuum-packed 真空包装的vacuum-packed 是复合形容词,常用于食品包装,如 vacuum-packed coffee。
同义词
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void 空白;空虚void 多用于比喻,指情感或意义上的空白;vacuum 指物理上的真空,也可比喻缺少某种事物或影响力的状态。After the team broke up, he felt a void in his daily life. 团队解散后,他觉得日常生活空落落的。
易混词(形近或义近,注意区别)
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vacation 假期vacuum 与 vacation 都以 vac- 开头,但意思无关:vacuum 是“真空”,vacation 是“假期”。We spent our vacation by the sea. 我们在海边度过了假期。
常见搭配
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in a vacuum 脱离实际地;与外界隔绝地No writer works in a vacuum; every book responds to other books. 没有作家能脱离外界写作,每本书都在回应其他书。
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vacuum cleaner 真空吸尘器The vacuum cleaner is too heavy for her to carry upstairs. 这台吸尘器太重了,她搬不上楼。
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create a vacuum 形成真空;造成空白A sudden resignation can create a vacuum at the top of an organisation. 突然的辞职可能会在组织高层造成空缺。