慢速英语:Treated Bed Nets Critical to Stopping lymphatic Filariasis

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短语讲解：

1. Over 120 million people are infected with lymphatic filariasis, also known as elephantiasis.

infect with 把…传染给…
例句：Go away, I do not want to infect you with my cold.
走开，我可不想把我的感冒传染给你。

2. Scientists say they have been able to demonstrate that the most common cause of elephantiasis can be stopped.

be able to 能，会；能够
例句：She might be able to help us.
她有可能帮我们的忙。

3. They are urging those at risk to sleep under nets treated with chemicals that kill a common insect - the mosquitoes.

at risk 有危险
例句：Your health might be at risk.
你的健康可能受到威胁。

4. Filariasis is only picked up by mosquitoes late in the evening, so this is the time when people are more likely to be protected by their bed nets.

be likely to 可能
例句：Remain at a price or be likely to rise.
停在一个价位上或有可能上升。