It was getting late when she finally showed up．

Many animals have disappeared due to environmental pollution．

Mistakes due to carelessness may have serious consequences．

汉译英

刘翔为准备奥运会加紧了训练。

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Our trade with foreign countries is stepping up．

He has stepped up his training to prepare for the race．

The Qin dynasty existed for a very short period．

Man can’t exist without air．

Does life exist on other planets?

Mr．Donovan has to support a large family．

Air, food and water are necessary to support life．