但我的信念受到了严重挑战。

But my conviction has been sorely tested.

youdao

现在，我们必须再次共同努力，应对韩国舰艇沉没事件构成的严重挑战。

Now we must work together again to address the serious challenge provoked by the sinking of the South Korean ship.

youdao

但是，与此同时，实施有效控制措施面临若干严重挑战，其中一些挑战可能是本次暴发所特有的。

At the same time, however, the implementation of effective control measures faces several significant challenges, some of which may be unique to this outbreak.

youdao