【expand音标】 英[ɪkˈspænd] 美[ɪkˈspænd]
【单词释义】 expand是什么意思：
vt.扩大；增加；使…变大；扩张；详述
vi.扩展；发展；张开；展开
[单词分级] 高考英语词汇
[第三人称单数] expands
[单词现在分词] expanding
[单词过去式] expanded
[单词过去分词] expanded
【关联词/派生词】
expansion n.扩大；扩张；扩充，展开；扩张物
expansive adj.广阔的；扩张的；易膨胀的；开朗的；全面的
expanse n.广阔的区域；扩张，展开；苍天
【单词例句】
◇ Tuan was a farmer in Vietnam. For decades, he had been struggling to rid his family of hunger. However, it always confused him how to expand the output of his crops.
俊是一名越南的农民，几十年来，他都一直在努力使家人摆脱饥饿。然而，如何扩大他的农作物产量这一问题却一直在困扰着他。
---- A New Farming Way
◇ The shift reverses a long-standing prohibition against tourists and private interests at the orbiting research lab, and reflects a broader push to expand commercial activities at the ISS and in space more generally.
长期以来，轨道研究实验室都禁止游客和私人机构到访，而这一转变推翻了这一禁令，同时也表明美国国家航空航天局将在国际空间站和太空中更广泛地扩大商业活动。
---- NASA to open space station to private citizens
◇ A study has demonstrated that having a chuckle causes the tissue inside the heart to expand – and increases oxygen flow around the body.
一项研究表明，笑能让心脏内部组织扩张，从而增加在体内四处流动的氧气。
---- Study finds laughter is good for heart health
◇ The smell of unbaked yeasty bread dough could attract your dog’s attention but it should always be kept out of reach. If eaten, the dough could expand dangerously in your dog’s stomach, and the fermented yeast could become toxic.
未烘焙的发酵面团的气味能吸引狗狗的注意力，但要始终确保不要让狗狗接触面团。如果面团被狗狗吃下，可能会在胃中膨胀，这十分危险，而且发酵的酵母也有毒性。
---- Food that dogs cannot eat
◇ "By expanding it, China will not be as nearly dependent on exports for economic growth as in its earlier economic development phase. This will create an even larger economic base inside China to sustain its economic growth," Foster said.
福斯特说：“通过发展国内市场，中国将不再像经济发展初期那样依赖于出口。这将进一步夯实中国内部经济基础，使经济可持续增长。”