youdao

But was there one major wave of migration across the Bering Strait into the Americas, or several?

但是有没有一次或几次大移民浪潮是穿过白令海峡到达美洲的呢？

youdao

Was there only one outward migration from a single point in Asia, or several from different points?

在亚洲，是否只有一个或多个移民点向外迁移？

youdao

Farms in many areas failed because little or no rain fell for several years.

VOA: special.2010.06.13

Realize that there's this wonderful mechanism in place that allows you to put your toe in the water for several weeks no less and then get a sense, and then decide whether or not this is something for you.

要知道这种好的评分体制哈佛也有,在这种机制下你可以先试听几周,熟悉这一机制，然后再决定这是否适合你。

哈佛公开课 - 计算机科学课程节选

Or perhaps, you've been married for several years and you want a baby.

又或者，你已经结婚好几年了，你想要一个宝宝了。

How about 课堂 - SpeakingMax英语口语达人

Cassell declined to say whether there was one suspect or several, citing the ongoing investigation.

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According to the Electronic Frontier Foundation (EFF), not Apple, Verizon, or several other Internet giants.

FORBES: Apple, Skype, Verizon, Other Firms Flunk Privacy Report Card

Instead, each victim could be paid an identical amount, or several broad tiers for compensation set up.

ECONOMIST: A hard task is over: hard questions remain