at first

I acted dumb at first.

我开始时有意沉默。

The new law about safety belts in cars was difficult to enforce at first.

规定系汽车安全带的新法规开始时很难实施的。

He tried to buffalo me at first meeting but I soon caught on to his tricks.

初次见面时他企图欺骗我, 但我很快就明白了他耍的花招。

The theory for exploring the moon time after time through double lunar swingby is analyzed at first.

分析了双月球近旁转向实现月球多次探测的原理。

Feodal porter Ma Babei never reconciles to failure and buys off workers at first and then makes destruct insanely.

他先收买工人，继而又疯狂进行破坏。

It was shown that the curing process of resoles, at first, proceeded by condensation reaction of methylol groups, and the formation of dimethylene ether linkage was predominant.

结果表明热固性酚醛树脂的固化过程,首先基发生缩合反应,缩合反应形成键主要的。

Avoid "colonics", the explanation of which, at first glance, seems to make sense and fits in with "cleansing".

避免使用“净化”的产。的解释乍一看似乎合情合理，与“净化”一词吻合。

At first she was very nervous about making the crossing in such stormy weather.

一开始她在这样的暴风雨天气横渡颇为紧张不安。

He was called a crank at first.

一开始他被叫做思想怪异者。

The drugs work well at first but gradually lose their effectiveness.

这些药的效果起初非常好，但后来逐渐失效。

At first he was most dictatorial and aggressive in what he said,but when he realised that he would get nowhere by that means,he began to sing another tune.

起初他的说法十分专横武断,但当他认识到这样做行不通的时候,他就开始改弦易辙了。

At first, the drug does no harm, but cumulatively its effects are bad.

这药开始人没有害处，但连续服用后果就坏了。

The responses of respiration to hypoxia is diphase,that is respiratory excitatory at first,then respiratory depression.

呼吸缺氧的反应都双相的,即先兴奋后抑制。

Beethoven at first dedicated his Heroes Symphony to Napoleon.

最初贝多芬把他的《英雄》交响曲献给了拿破仑。

Rather quiet at first, she grew very talkative over her second glass of sherry.

一开始她相当沉寂，但在喝第二杯雪利酒时她开始变得非常健谈。

I found it difficult to organize the timetables at first, but now I’ve got it down to a fine art.

开始的时候我觉得很难安排好时间表，但现在已经驾轻就熟了。

He was cross at first, but later he relented.

他起初很生气,后来变温和了。

He made progress in fits and starts at first but now he’s improving rapidly.

开始时，他的进步时断时续，但现在提高得很快。

King is at first slip.

金处于第一防守位置。

Under interrogation, he refused to say anything at first.

一开始审问的时候，他什么也不说。