And then it pushed me forward again and up, out of the snowpack.

然后它又把我从积雪里一次又一次推了上去。

In California there has been a 40 percent decline in the Sierra snowpack.

在加州Sierra，积雪场面积已缩小40%。

All avalanches are caused by an over-burden of material, typically snowpack, that is too massive and unstable for the slope that supports it.

所有雪崩都是由于物质的过渡负荷造成，通常是积雪堆积过厚，很不稳固，超出了山坡面的承载能力。