vacu+um

• vacu-来自拉丁语“vacuus”，意为“空的”
• -um名词后缀，表示事物或状态

vacu-（空）+ -um（名词后缀）→ 空的状态或东西

vacate

腾空，空出；来自“vacuus”

vacuous

空洞的，无意义的；来自“vacuus”

minimum

最小量；-um名词后缀

maximum

最大量；-um名词后缀

1. 释义 1真空；真空吸尘器；真空的

   The vacuum cleaner is very useful for cleaning carpets.

2. 释义 1真空；真空吸尘器；真空的

   In a vacuum, sound cannot travel.

3. 释义 1真空；真空吸尘器；真空的

   She vacuumed the entire house before the guests arrived.