Crossing the threshold, I was taken aback by the mess in the house.
一踏进门槛，屋子里的混乱景象使我吃了一惊。
He started swiftly and stealthily, and just as he was crossing the threshold he heard voices behind him.
他飞快地、鬼鬼祟祟地迈步往前，正当他要跨进门槛，就听见背后有说话声。
And we have every reason to think that this has increased the extent to which people's voices are heard — without crossing the threshold.
我们有一切理由认为，这提高了人民声音被听取的程度，虽然没有超越界限。
As he moved toward the mist of the fountains, Langdon had the uneasy sense he was crossing an imaginary threshold into another world.
当兰登走向喷泉发出的水雾时，他惴惴不安地感到自己正穿越一个虚幻的门槛而步入另一个世界。
A new edge tracking algorithm based on zero-crossing edge detection technique is applied in the process of threshold computing.
在阈值计算过程中，还用到一种基于过零点边缘检测技术的边缘追踪算法。
A new edge tracking algorithm based on zero-crossing edge detection technique is applied in the process of threshold computing.
在阈值计算过程中，还用到一种基于过零点边缘检测技术的边缘追踪算法。
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