知识 每天一分钟VOA、BBC听力 第1424期 2020-11-26 创建 播放:14560

介绍: In metric units, which of these prefixes means billion? Kilo, mega, giga, or tera.
These prefixes are in order of thousand, million, billion, and trillion with giga denoting billion.
But when it comes to wildfires, the term giga is used a little differently. A gigafire denotes a value of 1 million as opposed ...

介绍: In metric units, which of these prefixes means billion? Kilo, mega, giga, or tera.
These prefixes are in order of thousand, million, billion, and trillion with giga denoting billion.
But when it comes to wildfires, the term giga is used a little differently. A gigafire denotes a value of 1 million as opposed to 1 billion. The term has been around for a few years now. And it's been applied to several massive blazes throughout history, including one burning in California right now.
It's called the August Complex Fire. It's mostly contained, meaning it's mostly blocked from spreading further, but the damage has already been done. It's part of a highly active fire season across the United States.
This isn't the worse in national history, at least not at this point. The National Interagency Fire Center says since 1983 there have been two years when wildfires burned more than 10 million acres. And 2020 hasn't seen that yet.

在公制单位中,哪个前缀表示十亿?千、百万、十亿还是万亿?
上述前缀按顺序分别表示千、百万、十亿和万亿,其中giga表示十亿。
但就野火而言,giga这个词的用法有点不同。Gigafire表示100万,而不是10亿。这个词已经应用数年。历史上也曾被用来形容几场大规模火灾,包括现在在加利福尼亚州燃烧的大火。
这起火灾被称为“8月复合大火”。目前火势已基本得到控制,这意味着不会进一步蔓延,但火灾已造成严重损害。这是美国火灾高发季的一部分。
这场火灾并不是美国历史上最糟糕的火灾,至少目前不是。美国国家跨机构消防中心(简称NIFC)表示,自1983年以来,有两年的火灾季烧毁了超过1000万英亩土地。但2020年的火灾季还没有造成如此大的损失。

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