swell:主要指人身体上的“膨胀”，肿起，增长之类的。不及物动词 vi. 1.肿起,肿胀[(+up)]His ankles began to swell. 他的脚踝肿起来了。 2.(土地等)隆起;(河水等)上涨3.增长;增大;壮大[(+to/into)]The newly-arrived refugees swelled the ranks of the unemployed. 新来的难民增加了失业的人数。 4.(声音,音乐等)增强5.骄傲自负;夸大6.(情绪等)高涨Anger swelled in him. 他心头升起怒火。 7.(帆等)膨胀,鼓起[(+out)]The sails swelled out in the wind. 船帆在风中鼓起。 及物动词 vt. 1.使(力量等)增长2.使隆起;使上涨The river was swollen with melted snow. 河水因融雪而上涨。 3.使骄傲自大4.使(情绪等)高涨She was swollen with contentment. 她感到十分满足。 5.提高(音调,声音等)6.使膨胀,使鼓起[(+out)]A brisk wind swelled the sails. 一阵疾风使船帆鼓起。 expand：要指动物身体上的变化，也可指物体上的“膨胀“。及物动词 vt. 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。 不及物动词 vi. 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还有就是swell还可以做名词和形容词，expand只可做动词。手工回答。请采纳。
花蜜honey
