日本三级无码啪啪区|午夜视频久久一区久久一|AAAAA一级黄片|日本久久99久久|国际精品AV在线|狠狠2015亚洲一区|美腿丝袜亚洲网站|欧美色多多人人看|国产超碰美女在线|www色色在线色

單詞乎

sheath

音標[?i:θ]
sheath是什么意思、sheath怎么讀

sheath漢語翻譯

n. 鞘, 葉鞘, 翅鞘
【化】 護套
【醫(yī)】 鞘

sheath詞型變化

名詞復數:sheaths 動詞過去式:sheathed 過去分詞:sheathed 現在分詞:sheathing 第三人稱單數:sheaths 

sheath英語解釋

名詞 sheath:

  1. a protective covering for a knife or sword
  2. an enveloping structure or covering enclosing an animal or plant organ or part
    同義詞：case
  3. a dress suitable for formal occasions
    同義詞：cocktail dress

sheath例句

  1. The sheath of connective tissue enclosing a bundle of nerve fibers.
    經來膜包裹住神經纖維的膜狀結締組織
  2. A growing feather still enclosed in its horny sheath, especially one just emerging through the skin.
    (鳥類的)新生毛一種裹在角鞘中的新生毛，特別是剛剛冒出皮膚外的羽毛
  3. The innermost layer of the cortex that forms a sheath around the vascular tissue of roots and some stems.
    內皮層皮層的最內層，在根、莖的導管組織周圍形成一道葉鞘(莖衣)
0
糾錯