1. 展开 , 张开

2. 扩张 ; 发展 ; 增长 In ten years the city's population expanded by 12%. 十年之中 , 该城人口增加了百分之十二。

3. 膨胀 Water expands when it freezes. 水结冰时体积膨胀。 A tire expands when you pump air into it. 轮胎打了气就会胀大。

4. 详细说明 [(+on/upon)]

5. 变得和蔼可亲 ; 感到心旷神怡 ; 变开朗 My father expanded a little when he had had a drink, and started to talk more freely. 我父亲小酌之后 , 就变得开朗可亲些 , 话也说得多了。 Her face expanded in a smile. 她笑逐颜开。

1. 展开 , 张开 ( 帆 , 翅等 ) The eagle expanded its wings. 老鹰展开翅膀。

2. 使膨胀 ; 使扩张

3. 扩大 ; 扩充 ; 发展 He is thinking of expanding his business. 他正考虑扩展他的生意。

4. 详述 They have expanded my view on the question. 他们已更充分地阐明了我对这个问题的观点。