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Acute sinusitis is usually initiated by an acute respiratory tract infection of viral etiology.是什么意思？

Acute sinusitis is usually initiated by an acute respiratory tract infection of viral etiology.

急性鼻竇炎常常是由病毒性病因的急性呼吸道感染而發(fā)生.

acute

adj. 尖的，銳的，敏銳的，敏感的，嚴(yán)重的，劇烈的，[醫(yī)]急性的；

sinusitis

n. 鼻竇炎；

is

vt.& vi. 是（be的三單形式；n. 存在；

usually

adv. 通常，經(jīng)常，平常，慣常地，一直，向來，動(dòng)不動(dòng)，一般，素；

initiated

v. 開始( initiate的過去式和過去分詞 )，傳授，發(fā)起，接納新成員；

by

prep. 在…旁邊，表示方式，由于，經(jīng)過；adv. 經(jīng)過，表示保留或保存時(shí)用，短暫拜訪；

an

art. 一（在元音字母前代替不定代詞a），一任一某一，一個(gè)；

respiratory

adj. 呼吸的；

tract

n. 大片土地，（神經(jīng)纖維的）束，小冊子，<古>一段時(shí)間，長時(shí)間；

infection

n. <醫(yī)>傳染，感染，傳染病，染毒物，影響；

of

prep. 關(guān)于，屬于…的，由…制成；aux. 助動(dòng)詞 [非標(biāo)準(zhǔn)用語、方言] =have [主用于虛擬語氣]；

viral

adj. 病毒的，病毒引起的；

etiology

n. 病因?qū)W，病源論；

...the spiralling vortex airflow that slows the plane.
使飛機(jī)減速的螺旋形氣流渦旋

You just go on ahead. I'll come by later...
你只管先往前走。我隨后就來。

He who spares his rod hates his son, But he who loves him chastens him early.
24不忍用杖打兒子的,是恨惡他;疼愛兒子的, 趁早管教.

For further information, please contact 414 3925, extension 2253.
詳情請致電414 3925,轉(zhuǎn)分機(jī)2253。

He sat there while I made the case for his dismissal...
他坐在那兒，聽我陳述解雇他的理由。

Baroness Thatcher's claims seem credible to many.
撒切爾女男爵的主張?jiān)诤芏嗳丝磥硎强尚诺摹?/a>

Nothing to be got without pains but poverty.
一份耕耘，一份收獲。

This decree obliges unions to delay strikes.
該法令迫使工會(huì)推遲罷工。

The right to demand payment from the endorser of a commercial paper when the first party liable fails to pay.
追索權(quán)當(dāng)有支付義務(wù)的第一方不能支付時(shí)，可以向商業(yè)票據(jù)的背書人要求支付的權(quán)力。

the eternal verities of life
生命永恒的真理

Plasma - polymerization of ethylene gives films of complex, uncertain structure.
乙烯的等離子聚合得到復(fù)雜的, 無固定結(jié)構(gòu)的薄膜.

She is held in estimation by those who know her.
凡是認(rèn)識她的人都很尊敬她.

The cloud might be snowing ethane snowflakes into methane lakes below.
云層可能正在向下面的甲烷湖飄落乙烷雪.

The possible protective mechanism of estradiol is releasing.
降低體內(nèi)NO含量是腦保護(hù)的可能機(jī)制.

an ethos of public service
公益服務(wù)的意識

Results: Fresh water does inhibIt'stone formation rat kidney evoked by 1 , 2 - ethanediol and ammonium chloride.
結(jié)果: 淡泉水對乙二醇和氯化胺誘發(fā)的大鼠腎結(jié)石模型有明顯抑制作用.

Result Ethylparaben is a good antiseptic in fluorescein sodium eyedrop.
結(jié)果羥苯乙酯在熒光素鈉滴眼劑中的防腐良好.

Ester is one of the most important compounds in Organic Chemistry.
酯是有機(jī)化學(xué)中最主要的化合物之一.

The structures of 0.5 ML hydrogenated Si ( 100 ) surface are simulated by empirical tight - binding ( ETB ) method.
采用經(jīng)驗(yàn)緊束縛近似(empiricaltightbinding ) 方法模擬了Si ( 100 ) 表面0.5ML(monolayer) 氫化結(jié)構(gòu).

They were as far removed from the ethos of terrorism as you could imagine.
他們絲毫不受恐怖主義思潮的影響,這你可以想像到的.

Medical tests established that she was not their own child.
醫(yī)學(xué)化驗(yàn)證實(shí)她不是他們的親骨肉。

The next estrus was delayed.
下一次發(fā)情推遲了.

Acute sinusitis is usually initiated by an acute respiratory tract infection of viral etiology.是什么意思？

Acute sinusitis is usually initiated by an acute respiratory tract infection of viral etiology.是什么意思？