He was good-looking, with dark eyes which could smoulder with just the right intimation of passion.

他长得很帅，黑色的眼睛只要遇到恰当的激情暗示就会放电。

《柯林斯英汉双解大词典》

But the heresy continued to smoulder in the West with it's main centres in Gaul and Britain.

但是异端仍蠢蠢欲动，在西方与它的主要中心在高卢和英国。

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The leaves on the trees have begun to smoulder, not yet set alight with full autumn colour.

BBC: England's West Country: Still the apple of our eye