At one time there were millions of these birds in North America, but now there are none.

曾经还有数以百万计的这些鸟类在北美，但现在没有。

youdao

There are many more examples, but none hold a candle to what's happening right now.

还有更多的例子，但是没有一个对眼下正在发生的事情有什么帮助。

youdao

While there are now regional warning centers in the Indian Ocean, there are none in the Mediterranean.

印度洋上已经设置了预警中心，但地中海地区还没有行动。

youdao

There are none now.

FORBES: Third (de)generation

"None of the systems out there now are perfect, " says Enrico Fin, ArvinMeritor's head of advance sales for door systems.

FORBES: Making "Eureka!" Pay

There may well have been structural improvements in emerging economies, but just now markets are having none of it.

ECONOMIST: Emerging markets