According to the observation of the Canadian scientists 10 years, every landing on earth has more than 20 tons, meteorites roughly 20,000 pieces.

据加拿大科学家10年的观测，每年降落到地球上的陨石有20多吨，大概有两万多块。

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According to the observation and measurement, we discussed the functional significance of these differences of relative angles at different vertebral level.

通过综合分析，讨论了不同节段有关角度的差异与重力线，脊柱曲度大小，方向的关系以及在活动节段中的机能意义。

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The approach based on wavelet theory and phase space reconstruction for analyzing the law of time-dependent deformation of crack according to the observation data of dam is proposed.

本文基于小波分析理论和相空间重构技术，根据大坝裂缝的实测资料，提出了裂缝时变规律分析方法。

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According to Dr Ng, the Hubble observation says nothing about whether time is discrete or continuous.

ECONOMIST: Planck-scale physics

On Friday police also raided offices of the ZESN -- an independent election observation group -- in Harare, according to a program manager for the group.

CNN: Zimbabwe: More than 200 opposition supporters freed

The observation desk is also witness to proposals of marriage almost daily, according to unofficial tallies.

BBC: At 80, the Empire State Building strikes back