sheath 核心詞議:
n. 鞘;護套;女式緊身衣服
sheath 基本解釋
速記方法
速記技巧
詞源詞根法
來自古英語sceath,套,護套,來自proto-Germanic*skaithiz,套,護套,來自PIE*skei,切,分開,詞源同segment,section,science.比喻用法,即兩塊分開的木板,劍鞘的原型。
知識擴展
詞組短語
leaf sheath葉鞘;tendon sheath[解]腱鞘
sheath 變化形式
復數: sheaths
第三人稱單數: sheaths
過去式: sheathed
過去分詞: sheathed
現在分詞: sheathing
中文詞源:
sheath 劍鞘,套,護套
來自古英語 sceath,套,護套,來自 proto-Germanic*skaithiz,套,護套,來自 PIE*skei,切,分 開,詞源同 segment,section,science.比喻用法,即兩塊分開的木板,劍鞘的原型。
sheath
精選例句
1、 He drew his sword from its sheath.
他拔劍出鞘。
常見考點例句:
- Its researchers have turned them into a type of cell that produces the insulating sheath around a nerve cell .
- 其研究人員已經把干細胞變成了一種在神經細胞周圍產生絕緣護套的細胞。
- Aerosol jet at first atomises nanoparticle-based print materials into microscopic droplets , which are then focused , using a sheath of gas , into a precise jet stream directed by a nozzle .
- 氣溶膠噴氣首先將基于納米顆粒的印刷材料分裂成微小墨滴,隨后這些墨滴在鞘中氣體的作用下集中到由噴嘴控制的精確氣流中。
- Whenever there 's a nick or hairline crack in an insulation sheath , the electrical field in the underlying copper subtly shifts .
- 在絕緣套上只要出現缺口或者毛細裂縫,線纜里的銅周圍的電場就會輕微改變。
- Special kinds ofsteel , natural initial corrosion of the outer layer creates a protective sheath , that prevents the corrosion from advancing further into the bulk of the material , similarly as in the case of e.g. copper .
- 特殊材質的鐵,最初在最外層生銹腐蝕而后產生一層保護鞘,可以防止腐蝕進一步擴大到大部分的材料上,這個情況跟銅腐蝕的情況差不多。
- Despite its bad reputation , cholesterol is essential to life : it is a building block of the outer membrane of cells , and it is a principal ingredient in the digestive juice bile , in the fatty sheath that insulates nerves , and in sex hormones such as estrogen and androgen .
- 盡管名聲不好,但是膽固醇確實是生活中不可缺少的一部分:它參與形成了細胞膜;是膽汁酸的主要成分;存在于隔絕葉脈的脂肪鞘里;還存在于雌激素和男性素這樣的性激素里面。