expand
vt. 使膨胀, 详述, 扩张 vi. 张开, 发展 vt. 展开 vi. 展开 [计] 展开; DOS外部命令:将原始DOS磁盘上的压缩文件解压缩并拷贝到硬盘上
发音
词形变化
教材释义与例句
扩张；使膨胀；详述
if a company, business etc expands, or if someone expands it, they open new shops, factories etc
发展；张开，展开
The computer industry has expanded greatly over the last decade.
计算机行业在过去十年间大大地发展起来。
The hotel wants to expand its business by adding a swimming pool.
该酒店想添个游泳池来扩展业务。
the rapidly expanding field of information technology
迅速发展的信息技术领域
释义与例句
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1.
To change (something) from a smaller form or size to a larger one; to spread out or lay open.
及物You can expand this compact umbrella to cover a large table.
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2.
To increase the extent, number, volume or scope of (something).
及物A flower expands its leaves.
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3.
To express (something) at length and/or in detail.
及物 -
4.
To rewrite (an expression) as a longer, yet equivalent, sum of terms.
及物 数学Use the binomial theorem to expand #123;(x#43;1)#125;⁴.
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5.
To become, by rewriting, a longer, yet equivalent, sum of terms.
不及物 数学 -
6.
To multiply both the numerator and the denominator of a fraction by the same (non-zero) number (which yields a fraction of equal value).
及物 -
7.
To change or grow from smaller to larger in form, number, or size.
不及物Many materials expand when heated.
This compact umbrella expands to cover a large table.
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8.
To increase in extent, number, volume or scope.
不及物 -
9.
To speak or write at length or in detail.
不及物He expanded on his plans for the business.
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10.
To feel generous or optimistic.
不及物 -
11.
In a hierarchical list (such as a directory tree or table of contents), to show the subentries of (an entry).
及物 计算机 工程 数学
词汇关系
相关短语
词源
Recorded in Middle English since 1422 (as expanden, expaunden), from Anglo-Norman espaundre, from Latin expandere (“to spread out”), itself from ex- (“out, outwards”) + pandō (“to spread”). Doublet of spawn.
来源：wiktionary