methods

n. method的復(fù)數(shù)：方法，方法( method的名詞復(fù)數(shù) )，方法論，教學(xué)法，分類法；

例句
The old methods weren't adequate to meet current needs...
老一套方法已不足以滿足當(dāng)前的需要。

the

art. 指已提到的人（物），指說話人與聽者已知的人（物），用于獨(dú)一無二的事物前，與形容詞最高級(jí)和序數(shù)詞連用；

例句
He did have a real knowledge of the country...
他對(duì)該國(guó)的確知之甚多。

target

n. （服務(wù)的）對(duì)象，目標(biāo)，（射擊的）靶子，目的；vt. 瞄準(zhǔn)，把…作為攻擊目標(biāo)；

例句
The World Bank, with its poor environmental record, is an easy target for blame.
世界銀行由于在環(huán)境保護(hù)方面表現(xiàn)不佳而常常遭受詬病。

compound

n. 場(chǎng)地，復(fù)合物，（筑有圍墻的）院子，復(fù)合詞；

例句
This sticky compound adheres well on this surface.
這種黏性的化合物能牢牢地粘在這個(gè)表面上。

was

v. 用來表示某人或某物即主語(yǔ)本身，用來表示某人或某物屬于某一群體或有某種性質(zhì)（ be的過去式），在，存在，不受干擾；

例句
There was a terrible sadness in her eyes...
她眼神中流露出深深的悲傷。

prepared

adj. 事先準(zhǔn)備好的，愿意的，期望的；adv. 事先準(zhǔn)備好地，愿意地，期望地；v. 準(zhǔn)備( prepare的過去式和過去分詞)，預(yù)備（飯菜），配備，使（自己）有準(zhǔn)備；

例句
The officers and crew prepared to abandon ship in an orderly fashion.
全體船員秩序井然地準(zhǔn)備棄船。

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；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我們所見的由一位漂亮模特代言的昂貴化妝品

bromination

例句
METHODS: The target compound was prepared by the bromination and amination reaction.
方法: 用溴代及胺化反應(yīng)合成了四甲基吡嗪衍生物.

and

conj. 和，與，而且，于是，然后，因此；

例句
I spend a lot on expensive jewelry and clothing...
我花很多錢購(gòu)買昂貴的首飾和衣服。

amination

氨基化，胺化，胺化作用；

例句
METHODS: The target compound was prepared by the bromination and amination reaction.
方法: 用溴代及胺化反應(yīng)合成了四甲基吡嗪衍生物.

reaction

n. 反應(yīng)，反作用力，反動(dòng)，保守；

例句
When Chappel approached me about the job, my first reaction was of disbelief...
當(dāng)查普爾為這份工作找我商量時(shí)，我的第一反應(yīng)是不相信。

...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(qǐng)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。

Ascomycetes also important in study of mitotic recombination via a parasexual cycle.
子囊菌在研究準(zhǔn)性生殖中也是重要的.

Just because a camera is old does not mean it is valuable.
古舊的相機(jī)不一定就值錢。

Garnishes are terrific for making good drinks look even better.
裝飾可以讓好的飲品看上去更好,卻不能讓挽救不好的飲料.

He paid a month's rent in advance, just enough to satisfy the landlord's avarice.
他預(yù)交了一個(gè)月的房租，正好滿足房東的貪心。

The engagement has been called off.
婚約取消了。

...a television spectacular.
一場(chǎng)電視盛宴

It was a long haul doing the degree part - time, but it was worth it.
在職攻讀學(xué)位的過程雖然費(fèi)時(shí)很長(zhǎng)且很辛苦, 但是非常值得.

The Bridal Department will have experts on hand to give you all the help and advice you need.
婚禮用品部會(huì)有現(xiàn)成的專家為您提供所需的一切幫助和建議。

Their minibus was ripped apart by a bomb...
他們的面包車被炸彈炸得粉碎。

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方法: 用溴代及胺化反應(yīng)合成了四甲基吡嗪衍生物.用英語(yǔ)怎么說？

方法: 用溴代及胺化反應(yīng)合成了四甲基吡嗪衍生物.

METHODS: The target compound was prepared by the bromination and amination reaction.