防护头具
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Wearing Protective Headgear 带着保护性帽子
Protective Headgear Used in Bicycling 骑脚踏车防护帽
·2,447,543篇论文数据，部分数据来源于NoteExpress
Why doesn't he wear any protective headgear to guard against radiation in the rat experiment?
为什么他在老鼠实验中没有穿戴任何核保护措施？
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Wearing protective headgear, the jumping and catching is one part of a varied recovery programme.
带着保护性的帽子，进行了跳和扑球练习，这是众多恢复训练的一部分。
She was also presented by her staff with a tongue-in-cheek gift of protective headgear in the shape of a football helmet emblazoned with her department's seal.
BBC: Hillary Clinton returns to work at US state department
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