汉语翻译：
a. 扩张性的, 使扩大的, 广阔的
【化】 膨胀的; 可以膨胀的
【医】 扩张的, 膨胀的词型变化：
名词:expansiveness副词:expansively英语解释：
形容词 expansive:

able or tending to expand or characterized by expansion

of behavior that is impressive and ambitious in scale or scope同义词：grand, heroic

marked by exaggerated feelings of euphoria and delusions of grandeur

friendly and open and willing to talk同义词：talkative

例句：

"After he'd had a few drinks, Charles became very expansive.""查尔斯喝了几杯酒，话就滔滔不绝了。"

He greeted us with an expansive gesture (eg he stretched his arms wide) and a wide smile.他手舞足蹈笑逐颜开地迎接我们。

详细解释：
ex.pan.sive
adj.（形容词）
Capable of expanding or tending to expand.
膨胀的：具有膨胀的能力或趋势的
Broad in size or extent; comprehensive:
庞大的；宏大的：
例句：
expansive police powers.
庞大的**力量
Disposed to be open, communicative, and generous; outgoing:
豪爽的，开朗的：愿交往的，开放的，慷慨的；外出的：
例句：
Wine made the guest expansive.
酒使客人们心情舒畅
Grand in scale:
富裕的：
例句：
an expansive lifestyle.
富裕的生活方式
Psychiatry Marked by euphoria and delusions of grandeur.
【精神病学】 自大狂的：欢喜欲狂的或妄自尊大的
【引伸】
expan.sively
adv.（副词）
expan.siveness 或
ex.pansiv.ity