同根派生 plump down相关词英汉例句She glanced quickly around the only room and plumped down on the only available chair.她掃眡了一下擁擠的房間,撲通一聲坐在了唯一的一把空椅子上。She plumped down the heavy trunk and sat on a stone bench for a rest.她喫力地把那衹沉重的箱子放下來,然後坐在一張石凳上休息一下。plump down更多例句