We studied 132 children without head lice who lived in a slum in north-eastern Brazil.
针对生活在巴西东北部贫民区内的132名无头虱症的儿童开展了一项研究。
As the match began, I was alarmed to see that the other team was wrestling without head gear, a kind of light helmet designed to protect a wrestler's ears.
比赛一开始，我很警觉地注意到对方摔跤没有带头部护具，一种用来保护摔跤选手耳朵的轻质头盔。
As the match began, I was alarmed to see that the other team was wrestling without head gear, a kind of light helmet designed to protect a wrestler's ears.
比赛一开始，我很警觉地注意到对方摔跤没有带头部护具，一种用来保护摔跤选手耳朵的轻质头盔。
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