boom

Compared meaning: a loud, deep sound (noun).

比较义项：巨大低沉的响声（名词）。

• boom 本词

  Boom describes one sudden, deep, resonant sound, such as an explosion or distant blast; it emphasizes a single short burst, not ongoing noise.

  boom 指一声突然、低沉、洪亮的响声，比如爆炸声或远处的巨响；强调的是单次短促的爆发声，而不是持续不断的噪音。

  A loud boom echoed across the valley when the fireworks exploded.

  烟花爆炸时，一声巨响在山谷间回荡。

• roar

  Roar describes a loud, continuous, powerful sound, often from an engine, crowd, or animal; it suggests sustained intensity rather than a single burst.

  roar 指一种响亮、持续、有力的声音，常用于发动机、人群或动物，强调的是持续不断的强度，而不是单次的爆发声。

  The roar of the engine grew louder as the car sped down the highway.

  汽车在高速公路上疾驰时，发动机的轰鸣声越来越响。

• thunder

  Thunder refers specifically to the deep rumbling sound that follows lightning during a storm; it typically rolls or rumbles rather than bursts suddenly.

  thunder 专指暴风雨中闪电过后传来的低沉隆隆声；这种声音通常是滚动、隆隆作响的，而不是突然爆发的。

  Thunder rumbled in the distance long before the storm finally reached us.

  早在暴风雨真正到来之前，远处就已传来隆隆的雷声。

• roaring

  Roaring usually functions as an adjective or ongoing noun describing continuous loud sound from nature, like wind, fire or a waterfall, often modifying another noun.

  roaring 通常用作形容词或表示持续状态的名词，用来描述来自自然界（如风、火或瀑布）的持续巨响，常常修饰另一个名词。

  The roaring of the waterfall grew louder as we walked closer to the cliff.

  我们走近悬崖时，瀑布的轰鸣声越来越响。

Boom, roar, thunder, and roaring can all mean a loud, deep sound, but differ in type. Boom means one sudden sound. Roar means a loud, continuous sound, from an engine. Thunder means the sound after lightning. Roaring usually modifies a noun, describing sound from nature.

这几个词都可以指巨大低沉的声音，但侧重的声音类型和语气不同：boom 强调突然的一声巨响，roar 和 roaring 强调持续不断的轰鸣，thunder 专指雷声。这里不比较 boom 的“经济繁荣”义、roar 的动词义（吼叫）以及 roaring 在“roaring success”等短语中表示“非常成功的”的引申义。

Compared meaning: to grow or develop quickly and well (verb).

比较义项：迅速或成功地成长、发展（动词）。

• boom 本词

  Boom describes a sudden, often short-lived surge, especially in economic activity, business, or demand; it emphasizes speed and scale of increase rather than sustained health or quality.

  boom指突然、往往短暂的激增，尤指经济活动、商业或需求方面；强调增长的速度和规模，而非持续的健康或质量。

  Demand for electric cars boomed after fuel prices doubled last year.

  去年燃油价格翻倍后，电动汽车的需求迅速激增。

• thrive

  Thrive emphasizes vigorous, healthy growth, often under specific or even difficult conditions, and is common for living things as well as people or organizations enduring hardship well.

  thrive强调在特定甚至艰难条件下依然健康、旺盛地成长，常用于生物，也可用于在逆境中表现良好的人或组织。

  The cactus continued to thrive even after weeks without water.

  即使几周没有浇水，这株仙人掌依然茁壮成长。

• flourish

  Flourish suggests a broader, more formal or literary sense of prospering and developing fully over time, often used for cultures, arts, careers, or businesses reaching a high point rather than describing a sudden spike.

  flourish带有更宽泛、较正式或文学化的意味，指长期全面地繁荣发展，常用于文化、艺术、事业或企业达到鼎盛状态，而不是描述突然的激增。

  The local arts scene flourished after the old theatre was restored, drawing new galleries to the area.

  旧剧院修复后，当地的艺术圈蓬勃发展，吸引了新的画廊入驻这一地区。

Boom, thrive, and flourish can all mean to grow successfully, but the focus differs. Boom means a sudden, often short increase, especially in business. Thrive means healthy, strong growth, often under hard conditions. Flourish is more formal, meaning to prosper, for culture or careers.

这三个词都可表示“成功地成长、发展”，但语气和适用范围不同：boom侧重经济或商业活动的迅猛激增，常是短期现象；thrive侧重健康茁壮的持续成长，常见于动植物或身处逆境中的人和组织；flourish则语气较正式，强调长期、全面的繁荣，常用于文化、艺术或事业。这里不比较boom作为“隆隆声”的义项，也不比较flourish作为“挥舞（炫耀地舞动）”的义项。