No, they weren't composed entirely of onomatopoeias meant to represent the sound of explosions.

这些书也不全是由代表爆炸的象声词所构成。

youdao

Nothing untoward, like explosions, and no new knowledge gained. This has been our prediction all along on this matter.

没有发生什么意外，如爆炸等，但也没有获得什么新知识。我们对此的预言自始至终一直是这样的。

youdao

Glyph of Corpse explosion: Additional explosions from this glyph will no longer consume Unholy Runes.

尸爆雕文：此雕文造成的额外爆炸不再消耗邪恶符文。

youdao

From the tragedy in Moscow's subway, to the 2004 Madrid train bombings and the explosions in London's public transit system the following year, experts say no country is immune to terrorism.

VOA: standard.2010.03.30

The No. 2 explosion followed explosions in recent days at the No. 1 and No. 3 reactors.

WSJ: Japan's Nuclear Crisis Escalates

The Joker wreaks havoc across Gotham City with no apparent aim, leading to spectacular explosions, high-rise confrontations and a spine-chilling character study from Ledger.

BBC: Batman's nemesis crowns dark tale

U.S. law enforcement sources said investigators have discovered remnants of timing devices that may have been used in the train explosions -- but that no such fragments have been found at the site of the bus blast.

CNN: Investigators pick through London carnage