中国黄色一级毛片,伊人黄色片一,亚洲最新av一级大片,久久9久,影音先锋三级国产精品电影,日本美女精品视频免费网址大全,老司机在线四虎在线

cosh

cosh1
(Brit. informal)(英，非正式)
noun
  1. a thick heavy stick or bar used as a weapon
    （用作武器的）短棍；短棒
verb
  1. [with obj.]hit (someone) on the head with a cosh
    （對(duì)準(zhǔn)頭部）棍擊；棒擊
語源
  1. mid 19th cent.: of unknown origin
cosh2
[k??, k??se?t?]
(Mathematics)(數(shù))
abbreviation for
  1. hyperbolic cosine
    雙曲余弦
語源
  1. from cos + -h for hyperbolic. Compare with coth
英語寶典
考試詞匯表