pith helmet
US /ˈpɪθ ˌhelmɪt/
UK /ˈpɪθ ˌhelmɪt/

1.
木髓头盔, 软木头盔
a lightweight helmet made of pith (the soft tissue from the stems of certain plants) or cork, typically covered with cloth and worn in tropical climates as protection from the sun.
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The explorer wore a pith helmet to protect himself from the scorching sun.
探险家戴着木髓头盔以保护自己免受烈日灼伤。
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The old photograph showed a hunter in Africa wearing a classic pith helmet.
老照片上显示一位非洲猎人戴着经典的木髓头盔。