High mortality rates still afflict children of the Third World.

高死亡率仍然给第三世界的孩子？带来苦难。

youdao

We have techniques to save people. We can keep mortality rates low.

我们可以救活更多的人，保持极低的死亡率。

youdao

BackgroundCoronary heart disease is a common disease, its incidence and mortality rates are high.

背景冠心病是一种常见病，其发病率及死亡率都很高。

youdao

BackgroundCoronary heart disease is a common disease, its incidence and mortality rates are high.

背景冠心病是一种常见病，其发病率及死亡率都很高。

youdao