The exhausts contribution in no-heating season was 70% and 50% in heating season; but the 6 ring compounds distribution from coal combustion was higher than that from the exhausts.

在非采暖季机动车尾气排放的贡献率为70%，在采暖季贡献率为50%，煤的燃烧对六环化合物的贡献高于机动车排放的贡献。

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The formula was used to calculate the precipitation efficiency and the precipitation stimulation possibility of frontal clouds du-ring the first rainy season in South China.

用该公式计算华南前汛期锋面云系自然降水效率，并探讨人工播云的可能性。

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Retailers in precarious financial positions often try to ride out the holiday season in an attempt to ring up enough sales to save the business thus the slew of bankruptcy filings in January.

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Their speeches about jobs ring very hollow to 70, 000 construction workers who are not working, right in the middle of the construction season, on construction projects all over America.

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The positive trading update had a familiar ring to it, since other supermarket groups in Britain have also surprised the market with strong sales over the holiday season: J Sainsbury's like-for-like sales rose by 3.7% in the 13 weeks to Jan. 2, while retail bellwether John Lewis said its sales rose 12.7% in the five weeks to Jan. 2.

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