But only 15% of our undergraduates now receive their degrees in natural science or engineering.

可我们现在理工科本科生拿到学位的只有15%。

youdao

Even 15 billion years or so after the Big Bang, echoes of that event still linger in the form of background radiation, only a few degrees above absolute zero.

即使宇宙大爆炸发生在约150亿年前，它的回波仍然以背景辐射的形式残留着，仅比绝对零值高一点点。

youdao

Open all year round, the Treehotel might attract only the hardiest of souls during the winter as temperatures typically dip to around minus 15 degrees Celsius (5 degrees Fahrenheit).

CNN: Modern design meets nature with Sweden's Treehotel