Confusion consequently reigns over a broad spectrum of unanswered questions dealing with avian origins and the biology of dinosaurs and early birds.

因此，关于鸟类的起源、恐龙和早期鸟类的生物学特性等一系列未解之谜都笼罩在困惑之中。

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Policies that do so span a broad spectrum.

这样的政策跨越了很广的一个范围。

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What does the term 'broad spectrum' mean when applied to sunscreens?

当“广谱(broad spectrum)”用于指防晒霜时，是什么意思呢？

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The strong broad spectrum antibiotics needed to fight off such infections are also astronomical in price.

FORBES: Geraldine Ferraro And The High Cost Of Cancer Drugs

Furthermore, the process must include a broad spectrum of Egyptian voices and opposition parties.

WHITEHOUSE: President Obama on Transition in Egypt

Blackening it allows it to absorb light throughout a broad spectrum, making it far more effective.

BBC: Copper wire