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本期内容：
Since the world is grappling with a lack of ventilators which could make a crucial difference in the treatment of COVID-19 patients, a team of volunteers, including physicians, engineers, computer scientists and others, which has been centred at the Massachusetts Institute of Technology (MIT), has started working on developing a safe and inexpensive alternative to the technology, which can be built quickly anywhere in the world, the institute has said in a statement.
grapple vi. 扭打，搏斗
• grapple/wrestle with: 竭力解决
ventilator n. 人工呼吸机
make a crucial difference in: 起到至关重要的作用
alternative n. 替代选择
(more choices, more possibilities)
• We had no alternative but to fire him.
我们别无他法，只有辞退他。
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