The casualty rate for Mars missions tops 50 percent.

火星任务的伤亡率高达50%。

As a result, the casualty rates have gone down.

所以，伤亡率也开始下降。

The casualty rates are just absolutely phenomenal at all these.

当时的伤亡率绝对十分惊人。

General John Campbell said basic mistakes were contributing to high and rising casualty rates, especially among the police.

坎贝尔(John Campbell)表示，根本性的错误导致伤亡率不断上升，尤其是在警察中间。

This combined to lead to the staggeringly high casualty rate.

这导致了惊人的高伤亡率。