expand
/ɪkˈspænd/verb
1- become or make larger or more extensive扩大; 扩充; 扩展; 发展：
no obj. their business expanded into other hotels and properties他们的业务扩展到了其他旅馆和房地产中
with obj. expand the hole with a file.用锉将孔锉大。
1.1
- no obj. Physics (of the universe) undergo a continuous change whereby, according to theory based on observed red shifts, all the galaxies recede from one another【物理】（宇宙）膨胀。
1.2
- no obj.
expand on
give a fuller version or account of进一步阐述; 详述： the minister expanded on the government's proposals.
部长就政府的提案作了进一步的阐述。
1.3
- no obj. figurative become less reserved in character or behaviour〈喻〉变得开朗; 变得愿意交谈：
Alice opened and expanded in this normality.
艾丽斯在这种正常状态下开口说话了, 心情也变得开朗起来。
派生词
expandable
adjectiveexpander
nounexpansibility
nounexpansible
adjective词源
late Middle English: from Latin expandere 'to spread out', from ex- 'out'+pandere 'to spread'.