TCWP Threshold Crossing Waypoint 跑道跨越点
threshold crossing height 跑道头通过高度 ; 跑道入口跨越高度
threshold crossing problem 阈交问题
threshold crossing intervals 阈值点时间间隔
TCH Threshold Crossing Height 入口穿越高 ; 跑道入口跨越高度
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。
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