pith helmet：热带国家用的木髓遮阳帽

pith,木髓，helmet,头盔。流行于印度孟加拉邦地区。

• umber
• umbilicus
• umbra
• umbrage
• umbreila
• umbrella
• umfaan
• umlaut
• umpire
• umpteen
• un-
• unabashed
• unabated
• unable
• unaffected
• unalienable
• unanimity
• unanimous
• unassuming
• unbearable
• unbend
• unbending
• uncanny
• unceasing
• unceremonious