The number of persons harbouring latent infections is unknown ( and likely unknowable at present ), they add.

Similarly, in human malignant harbouring IDH 1 mutations, we find markedly elevated levels of 2 HG.

类似地, 在人恶性神经胶质瘤固有的异柠檬酸脱氢酶1突变中, 我们发现2-羟基戊二酸也是明显性地上升.

Ju Xiang appears to be calm but is secretly harbouring thoughts of escape.

菊香表面平静,实已立定决心逃婚.

You can't lay down hard and fast rules.

规则不能定得太严太死.

There's no hard-and-fast rule.

并无定规.

The teacher said that there was a hard-and-fast rule against smoking in school.

教师说学校有严格的禁止吸烟的规定.

The company was hit hard by the recession and is only now beginning to recover.

该公司曾受到工商业衰退的沉重打击,现在只是刚刚开始复苏.

Some Asian countries hit hard by recession in the late 1990 s tried to repatriate migrant workers.

一些亚洲国家在1990年代末期经济衰退得很厉害,因此想将外劳遣送回母国.

Snow was hard by the time I walked back.

走到后院的时候已是漫天鹅毛大雪了.

B : No way, I just encourage boys to work hard by asking them more questions in class.

没有办法, 只是通过多提问男孩子来鼓励他们学习.

I am pressed hard by my boss to finish the project quickly.

为了能快些完成那个项目,老板给我施压很大.

Emerging economies are being hit hard by weakening exports and the collapse of private capital flows.

新兴的经济体正因出口的日益削弱和私人资本流动的奔溃而遭受严重的打击.

He is hard by seventy.

他快到七十岁了.

He sends down ice like raindrops: water is made hard by his cold.

他掷下冰雹如碎渣. 他发出寒冷,谁能当得起呢?

The city of Mianyang was hit hard by the May 12 earthquake.

绵阳市受到5月12号地震的沉重打击.

His home is hard by the railway station.

他家在火车站近旁。

Japan has been hard by falling demand for its cars and consumer electronics products.

对日本来说,打击则来自对汽车及消费电子产品需求的下降.

They were hard by each other.

他们彼此很亲密.

But crops have been hit hard by the record heat this summer.

但是由于夏季创纪录的高温严重影响了作物收成.

He stood hard by me.

他站在我的旁边.

Our school is hard by the railway station.

我们学校离火车站很近.