The death of our beloved premier cast a gloom over the whole country.
我们敬爱的总理的逝世使得全国罩上了一层悲伤的气氛。
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Five weeks after the experiment began, all the plants were covered by bags that allowed carbon dioxide, oxygen and water vapour in and out, but stopped the passage of larger molecules, of the sort a beanstalk might use for signalling.
五周过后,实验人员给所有的蚕豆都罩上袋子,这种袋子允许二氧化碳、氧气和水蒸气出入,但那些豆茎可能用来发送信号的大分子物质,却无法通过。