The technique has been to mutate the genes by irradiation or chemicals.

该技术是通过放射线照射或者使用化学方法使基因变异。

柯林斯例句

He has been to middle school.

他念过中学.

《现代汉英综合大词典》

The doctor has been to see the patient.

医生来[去]看过病人了.

《现代英汉综合大词典》

The effect of this has been to increasingly marginalize the local authority sector.

这件事的影响是使地方当局越来越受到排斥。

柯林斯例句

The effect of the continuous attacks has been to wear out his troops.

接连不断的攻击就是要拖垮他的军队。

柯林斯例句

Our policy has been to uphold the law.

拥护法律是我们一贯的方针。

辞典例句

No doubt he has been to sea in some tub or other.

毫无疑问他不定坐了个什么小船儿在海上漂荡过.

辞典例句

Historically, the procedure has been to determine the'simple'cyanide and the'total'cyanide.

这种方法长期以来一直用于测定 “ 简单”氰化物或 “ 总 ” 氰化物.

辞典例句

The linguists'main interest has been to analyze and describe languages.

语言学家的主要兴趣一直在于分析并描述语言.

辞典例句

He has been to the four corners of the country.

他已到过全国各地.

辞典例句

The result has been to encourage domestic production and depress domestic consumption, especially in Europe.

结果是鼓励了国内生产,压缩了国内消费, 在欧洲尤是如此.

辞典例句

The standard exploration procedure here has been to block out areas on the magnetic map.

这里的标准勘探程序是先在磁异常图上画出这个地区.

辞典例句

She has been to school.

她上学去了.

口语例句

Tom has been to an amusement park in addition to Dave.

除了大卫外汤姆也去过了游乐园.

互联网

Our aim has been to make it consistently important.

我们的目标一直是使他们始终很重要的.

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