n. an electrical home appliance that cleans by suction
v. clean with a vacuum cleaner
词态变化
复数形式:vacuums
第三人称单数:vacuums
现在分词:vacuuming
过去式:vacuumed
过去分词:vacuumed
常见例句
1
The part of a vacuum tube opposite the cathode
2
A vacuum tube in which the exhaustion is carried to a very high degree, with the production of a distinct class of effects; -- so called from W
3
n a vacuum tube in which a hot cathode emits a beam of electrons that pass through a high voltage anode and are focused or deflected before hitting a phosphorescent screen
4
the most electropositive and alkaline metal n a degree on the centigrade scale of temperature n the speed at which light travels in a vacuum
5
pipet consisting of a small tube with a vacuum bulb at one end for drawing liquid in and releasing it a drop at a time
