爆炸时飞出了一块金属碎片。

A shard of metal flew off during the explosion.

爆炸后，一块金属碎片嵌在了墙里。

The explosion left a fragment of metal embedded in the wall.

大量金属碎片可以熔化进行再利用。 。

A lot of scrap metal can be melted down and used again.

他们所发现的不过是一点金属碎片罢了。

What they had discovered was nothing more than a scrap of metal .

当手榴弹爆炸时，所有的小金属碎片会飞的到处都是，造成杀伤和损害。

So when the grenade explodes, all the little pieces of metal go flying everywhere and kill and destroy.

他们已召回了5000万个充气机，此前一些充气机喷发金属碎片，全球至少有25人死亡。

They already recalled 50 million inflators after some sprayed metal shards and killed at least 25 people worldwide.

这类事情的发生几率惊人的低，不过涉及到金属碎片扎进屁股的时候，我们可不愿意冒这个险。

The chances of it happening are incredibly unlikely, but we’re not taking any chances when it comes to metal shards impaling us up the ass. (Source)

但外科医生说，如果祸端是金属碎片的话，置换手术会相当复杂，可能会对一些患者留下持久性并发症。

But surgeons say that when metal particles are the culprit, the procedures to replace the devices can be far more complex and can leave some patients with lasting complications.

这个太空舱将有助于重新开放目前由于漂浮着大量金属碎片和失效卫星空壳而无法为将来太空飞船所用的地球轨道。

This pod could help reopen orbits that are currently inaccessible to future spacecraft due to the amount of shredded metal and empty hulls of dead satellites floating around.

虽然地球上方的空气在一定程度上阻止了那些位于低地球轨道上的太空垃圾高速撞向地球上，但由于相互摩擦也制造出不少洒向地球的金属碎片。

The problem: Whisper-thin traces of air gradually put the brakes on objects in low Earth orbit and create earthbound showers of hot metal bits.