名詞信封，封皮; 殼層，外殼; 包裹物; [生物學(xué)]膜，包袋
名詞
1. envelope的解釋
1. Mother addressed the envelope.
母親在信封上寫姓名地址。
1. 包膜：后發(fā)現(xiàn)該病毒也可存在于其他疾病,故稱為EB病毒(Epsteinbarr virus,EBV),EB病毒屬皰疹病毒科,又稱人皰疹病毒4型(HHV-4),為雙鏈DNA病毒,完整的病毒顆粒由類核(nucleoid),膜殼(capsid),殼微粒(capsomere),包膜(envelope)所組成,類核含有病毒DNA;
2. 外殼：漢他病毒屬RNA型病毒,病毒呈圓形或卵圓形(如圖一),直徑約80-115(95)nm,核外被含有脂質(zhì)之外殼(envelope)所包圍,外殼表面有突起,病毒在細(xì)胞質(zhì)內(nèi)增殖時(shí)可產(chǎn)生大量之特殊包涵體.
3. envelope：env; 發(fā)現(xiàn)被膜抗原
1. 信封
An envelope is the rectangular paper cover in which you send a letter to someone through the post.
2. 挑戰(zhàn)限制尺度；突破原有底線
If someone pushes the envelope, they do something to a greater degree or in a more extreme way than it has ever been done before.
e.g. There's a valuable place for fashion and design that pushes the envelope a bit...
在原有尺度上有所突破的時(shí)尚和設(shè)計(jì)受到人們的重視。
e.g. No cinema director had a more profound effect in pushing the envelope of acceptable family entertainment.
在挑戰(zhàn)家庭娛樂(lè)片的接受程度方面，沒(méi)有哪個(gè)電影導(dǎo)演比他的影響更深遠(yuǎn)。