而这一切都预示了十五年或二十年后将要发生的事情：他们长大，二战爆发。

All this is heralding something that will explode 15 or 20 years later, when this generation has grown up.

youdao

二十年后，这一比例将上升到三分之二以上。

Within 20 years it is projected to be over two thirds.

youdao

二十年后，这一比例将上升到三分之二以上。

Within 20 years it is projected to be over two thirds.

youdao