近几十年来，环境威胁已经超越了地域边界，发展到全球范围，最令人不安的是，环境威胁正以极快的速度成倍增长。

In recent decades, environmental threats have expanded beyond regional boundaries to have global reach and, most hauntingly, are multiplying at a dizzying rate.

youdao

你可以与之交谈的设备数量正在成倍增长，首先是你的手机，然后是你的汽车，现在你可以告诉你的厨房电器该做什么。

The number of devices you can talk to is multiplying—first it was your phone, then your car, and now you can tell your kitchen appliance what to do.

youdao

该厂产量成倍增长。

The output of the factory has doubled and redoubled.

《新英汉大辞典》

The expected life spans increased dramatically in the last couple of hundred years until now, for people that were born when you were born you can expect to live to be 80 years old, a doubling in life span, fairly dramatic.

从几百年前到现在,预期寿命显著增长了,你们同期出生的那批人,能够活到八十岁,预期寿命增长了一倍,令人印象深刻

耶鲁公开课 - 生物医学工程探索课程节选