Our maths classes are pretty deadly .

我们的数学课非常枯燥。

youdao

These cups are pretty, but they are deadly dear.

这些杯子真美，可是实在贵得要命。

youdao

With an array of world-class finishers in their back pocket - Danny McGuire, Rob Burrow, Ali Lauitiiti - they are pretty deadly from close range.

BBC: Long to steer Saints to victory

You know, for a weapon that's so deadly and really designed for the military, especially with the high-capacity magazines, it is a pretty easy thing to do, even with a background check.

CNN: Gun store nixes Mark Kelly's AR-15 purchase