But there is no letup in the fighting.

是战斗并没有停止。

But he felt no letup in the cold precision of his being.

对自己冷酷的精确性并没有感到松懈。

It's a recognized syndrome that can go on for a year or more without letup.

这是一种公认​​的综症，可以持续一或更长时间而不间断。

There's no sign of a letup in eastern Australia where firefighters are continuing to battle numerous bush fires in the states of New South Wales and Queensland.

在澳大利亚东部，消防员们仍在持续与新南威尔士州和昆士兰州的丛林大火斗争，大火尚没有减弱的迹象。