According to the European Space Agency (ESA) the number of collision alerts has doubled in the past decade.

根据欧洲航天局（ESA）所述，卫星碰撞报警次数在最近十年增加了一倍。

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Fog is the enemy of Ship's collision prevention, a large number of collision accidents are happened in fog.

雾是船舶避碰的天敌，众多的碰撞事故都是在雾中发生的。

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The algorithm counts the number of collision slots in a frame, then estimates the number of tags according to collision slots and frame length, dynamically adjusts the frame length according to tags.

该算法思想是，统计每一帧中发生碰撞的时隙数，根据碰撞时隙数、帧长度与标签数的关系估计出标签数，然后根据标签数动态调整帧长度的大小。

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Two people have been killed and a number of others injured in a collision on the M6 in south Cumbria.

BBC: M6 in Cumbria closed by two-death crash

Basically, what happened was a collision between a falling sex ratio (the number of adult males per 100 adult females), economic stagnation, and a burgeoning progressive welfare state.

FORBES: The Real Marriage Crisis Is Economics, Not Gay Marriage

Mir experienced a near-disastrous collision in 1997, and was hit by a number of technical problems in the months following the incident.

CNN: Russia reluctant to let Mir die