If the burst is shallow enough to penetrate the surface, blast, thermal, and initial nuclear radiation effects will be present, but will be less than for a surface burst of comparable yield.

如果离地面够浅以致能穿透表面，那么将出现冲击波、热辐射以及早期核辐射作用，但是作用效果要小于近似当量的地面爆炸。

youdao

Two other miners stumbled to the surface hours after the blast.

其他2名矿工在爆炸几小时后蹒跚地走到了地面上。

youdao

But it doesn't just explode. As its surface layers blast outwards its core is smashed inwards.

但事情又不象爆炸那样简单。当它的外层被炸飞时，它的内核却在向内塌陷。

youdao

This mission, which is due to blast off in 2002, will send a spacecraft to an asteroid to collect surface samples, then return them to earth for analysis.

ECONOMIST: Eros