But he felt no letup in the cold precision of his being.
但他对自己冷酷的精确性并没有感到松懈。
科学60秒-科学美国人 2021年5月合集
It's a recognized syndrome that can go on for a year or more without letup.
这是一种公认的综合症,可以持续一年或更长时间而不间断。
BBC 听力 2019年11月合集
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.