This kind of problem frequently crops up.

这类问题是经常发生的。

属类：综合句库--

These faculae frequently are the forerunners of sunspot formation

这些光斑常常是形成太阳黑子的先兆。

属类：综合句库--

These canals are frequently excavated through rock, and require tunnels, flumes, syphons, aqueducts and open concrete-lined channels

这些水渠往往要凿通岩石,并需要地道、引水沟、弯管、渡漕和混凝土水道。

属类：综合句库--

That happens frequently .

这样的事情经常发生。

属类：综合句库--

Evolutionary biologists and paleontologists ask such questions more and more frequently

支持进化论的生物学家和古生物学家越来越频繁地提出了上述问题。

属类：综合句库--

The award of the arbitrator is binding and the practice is frequently used in the US

仲裁人的裁决有约束力,这种惯例在美国常被使用。

属类：综合句库--

Consonants are frequently assimilated to the consonants which they precede.

子音常被其后所接之子音所同化((如ads(成为ass)等))。

属类：综合句库--

Frequently the basal ovule, which is the last one to be fertilized would abort

最后受精的基生胚珠经常败育。

属类：综合句库--

The most objectionable part is, that the alteration of manners on being introduced into company is frequently too sudden

最令人不习惯的是,刚被引进社交界时作风的变化常常过于突然。

属类：综合句库--

The author frequently quoted Shakespeare.

作者经常引用莎士比亚作品里的话。

属类：综合句库--