expand

动词 expand:

1. extend in one or more directions
   同义词：spread out
2. become larger in size or volume or quantity
3. make bigger or wider in size, volume, or quantity
4. grow stronger
   同义词：boom, prosper, thrive, get ahead, flourish
5. exaggerate or make bigger
   同义词：inflate, blow up, amplify
6. add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing
   同义词：elaborate, lucubrate, expatiate, exposit, enlarge, flesh out, expound, dilate
7. expand the influence of
   同义词：extend

1. Metals expand when they are heated.
   金属遇热则膨胀。
2. Our foreign trade has expanded during recent years.
   近年来我们的对外贸易有所扩大。
3. The petals of many flowers expand in the sunshine.
   许多花的花瓣在阳光中绽放。

ex.pand

v.（动词）
ex.pand.ed,ex.pand.ing,ex.pands
v.tr.（及物动词）
To increase the size, volume, quantity, or scope of; enlarge:
扩大：增加尺寸、体积、数量或范围；扩大：
例句：
expanded her store by adding a second room.See Synonyms at increase
加一间房屋来扩大她的商店参见 increase

To express at length or in detail; enlarge on:
详述：更充分地阐述；详述：
例句：
expanded his remarks afterward.
在后面详细阐述他的评论

To open (something) up or out; spread out:
张开；展开：
例句：
The bird expanded its wings and flew off.
鸟展开翅膀飞走了

Mathematics To write (a quantity) as a sum of terms in an extended form.
【数学】 展开：以延展的形式记下（数量）某项数
v.intr.（不及物动词）
To become greater in size, volume, quantity, or scope:
展开：在尺寸、体积或范围等方面变大：
例句：
Air expands when heated. This critic`s influence is expanding.
空气受热膨胀；批评的影响正在扩大

To speak or write at length or in detail:
详述，充分叙述：
例句：
expand on a favorite topic.
详述一个感兴趣的论题

To open up or out; unfold:
张开；展开：
例句：
The chair expands to form a day bed.
椅子展开形成一张睡椅

To feel expansive.
心情舒畅

来源：
Middle English expanden [to spread out]
中古英语 expanden [展开]
from Latin expandere
源自 拉丁语 expandere
ex- [ex-]
ex- [前缀，表.出自….]
pandere [to spread] * see pet…-
pandere [展开] *参见 pet…-

【引伸】
expand.able
adj.（形容词）
expand.er
n.（名词）