aspiration: n.1.热望,切望,渴望;志愿,愿望,抱负 (for; after)。2.【医学】(从体腔中)吸出。3.吸入。4.【语音】发送气音,送气音。短语和例子She had aspirations to be an actress. 她想做女演员。
vacuum: n.(pl. vacuums, vac-ua )1.真空;空处,空虚,空白。2.〔美口〕吸尘器(= vacuum cleaner)。短语和例子a low [partial] vacuum低度[未尽]真空。 feel a vacuum in the lower regions 〔戏谑语〕觉得饿。vi.,vt.〔美口〕1.用吸尘器扫除。2.用真空干燥机干燥。adj.1.真空的。