比特币诞生12年来迎来最大考验，周二萨尔瓦多正式接纳它作为该国的法定货币。请看本报昨日的报道：

Bitcoin is undergoing the biggest test in its 12-year history as El Salvador becomes the first country to adopt it as legal tender Tuesday.

Both enthusiasts and detractors of crytocurrencies will be monitoring the experiment to see if a significant number of people want to transact with Bitcoin when it circulates alongside the U.S. dollar, and whether it brings any benefits to the violent, impoverished Central American nation.

The country bought 400 bitcoins ahead of the rollout, with a market value of about US$20 million at current prices.

报道中的legal tender就是“法定货币”。例如：

Bank of England notes have been legal tender in Britain since the early part of the 19th century.

从19世纪初叶，英格兰银行发行的纸币就已经是英国的法定货币了。