慢速英语:Scientists in Poland Work to Save Honeybees(翻译)

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短语讲解：

1. Polish scientists say they have found a natural substance in flowers that is more than 90 percent effective in saving bees.

more than 多于
例句：Margaret needed support more than ever.
玛格丽特比以往更需要关心。

2. They say such products should be used in affected areas only when it is dark -- after bees are asleep.

be used in 被用于
例句：Cooked kidney beans can be used in place of French beans
煮熟的红芸豆可以代替四季豆。