提到“黑五”，我们最先想到的应该是美国感恩节之后的星期五购物节。其实，股市中也有黑五，不仅有黑五，还有黑一、二、三、四。

Black Monday 

Black Monday occurred on Oct. 19, 1987, when the Dow Jones Industrial Average (DJIA) lost almost 22% in a single day, the largest one-day drop in stock market history. The event marked the beginning of a global stock market decline, and Black Monday became one of the most notorious days in financial history. By the end of the month, most of the major exchanges had dropped more than 20%.

黑色星期一是1987年10月19日，当时道琼斯工业平均指数（DJIA）在一天内下跌了近22%，是股市历史上最大的单日跌幅。这一事件标志着全球股市下跌的开始，黑色星期一成为了金融史上最臭名昭著的日子之一。到月底，大多数主要交易所的跌幅均超过了20%。

Black Tuesday

Black Tuesday was Oct. 29, 1929, and it was marked by a sharp fall in the stock market, with the Dow Jones Industrial Average (DJIA) especially hard hit in high trading volume. The DJIA fell 12%, one of the largest one-day drops in stock market history. More than 16 million shares were traded in the panic sell-off, which effectively ended the Roaring Twenties and led the global economy into the Great Depression.

黑色星期二是1929年10月29日，它的标志是股票市场的急剧下跌，道琼斯工业平均指数（DJIA）在高交易量中受到严重打击。道琼斯工业指数下跌12%，是股市历史上最大的单日跌幅之一。在这次恐慌性抛售中，交易超过1600万股股票，这实际上结束了咆哮的20年代，使全球经济进入大萧条。

Black Wednesday

Black Wednesday refers to September 16, 1992, when a collapse in the pound sterling forced Britain to withdraw from the European Exchange Rate Mechanism (ERM). The U.K. was forced out of the ERM because it could not prevent the value of the pound from falling below the lower limit specified by the ERM. The European ERM was introduced in the late 1970s to stabilize European currencies in preparation for the Economic and Monetary Union (EMU) and the introduction of the euro. Countries seeking to replace their currency with the euro were required to keep the value of their currency within a specific range for several years.

黑色星期三是1992年9月16日，英镑的崩盘迫使英国退出欧洲汇率机制（ERM）。英国因无法阻止英镑的价值跌破ERM规定的下限，被迫退出ERM。欧洲汇率机制是在20世纪70年代末引入的，目的是稳定欧洲货币，为经济和货币联盟（EMU）和欧元的引入做准备。寻求用欧元取代其货币的国家被要求在几年内将其货币价值保持在一个特定的范围内。

Black Thursday

Black Thursday is the name given to an infamous day in stock market history: Thursday, Oct. 24, 1929, when the market opened 11% lower than the previous day’s close, and panicked selling ensued throughout a day of heavy trading. Black Thursday is considered the first day of the Great Stock Market Crash of 1929, which continued until Oct. 29.

黑色星期四是1929年10月24日星期四，是对股票市场历史上一个臭名昭著的日子的称呼，当天市场开盘时比前一天的收盘价低11%，在一整天的繁重交易中，恐慌性抛售随之而来。黑色星期四被认为是1929年股市大崩盘的第一天，这场大崩盘一直持续到10月29日。

Black Thursday also refers to shopping and sales that begin on Thanksgiving Day, a preview of Black Friday, the beginning of the holiday shopping season.

黑色星期四也指在感恩节开始的购物和销售，是黑色星期五的预演，是节日购物季的开始。

Black Friday

Black Friday was a stock market catastrophe that took place on Sept. 24, 1869. On that day, after a period of rampant speculation, the price of gold plummeted, and the markets crashed. This stock market crash was the origin of referring to stock market crashes as "black" days. It can also refer to a shopping holiday in the U.S. following Thanksgiving. 

黑色星期五是1869年9月24日，一场股票市场灾难。当天，经过一段时间的疯狂投机，黄金价格暴跌，股市崩盘。这次股市崩盘是将股市崩盘称为"黑色"日子的起源。黑色星期五也可以指美国在感恩节之后的一个购物节。

英文来源：Investopedia

翻译：王碌碌