Youth comes but once in a lifetime.

Do you think you'll ever do another movie series or is this a once-in-a-lifetime thing?

你认为你还会参加这种电影系列的拍摄 吗 ?还是说这是你一生中只想做一次的事?

This was a once-in-a-lifetime opportunity.

这是千载难逢的一次机会.

This opportunity comes once in a lifetime yo.

这种机会人生只有一次,哟.

She felt his parents were giving her the once-over.

她感到他父母打量着她.

Give the application a once-over and tell me what you think. Should we hire this guy?

扫一眼这份申请书,然后谈谈你的想法. 你觉得我们应该聘用这个人 吗 ?

He gave the car the once-over and decided not to buy it.

他对那辆汽车随便看了一眼,便决定不买.

Before buying the car he gave it the once-over.

他买那辆车前曾草草看了一下.

I gave him the once-over.

我扫了他一眼.

Say over again and yet once over again.

请说了一遍,再向我说一遍.

Let's give this memorandum the once-over.

让我们大略地看一下备忘录.

Please give it more than the usual once over lightly.

请仔仔细细地检查一下,不要像平时那样马马虎虎的.

Wait a minute and I'll give my shoes a once-over.

请稍等片刻,我把皮鞋略微擦一擦.

She gave the apartment a once-over.

她匆匆扫视了一下公寓。

The new supervisor came round and gave everybody the once-over.

新来的主管转了一圈,快速地检查了我们每个人.

Oncogene: Gene that can cause cancer.

致癌基因: 能够导致恶性肿瘤的基因.

Moreover, transformation of tumor cells is involved in oncogene amplification or promoter enhancement.

而且, 肿瘤细胞的转型通常涉及致癌基因的扩大,以及启动子的加强.

Figure 1 . The difference between an oncogene in a virus and in a cell.

图1细胞癌基因和病毒原癌基因的不同.

A normal gene that has the potential to become an oncogene.

原致肿瘤基因一种有可能成为肿瘤基因的正常基因.

The stem cell leukemia ( SCL ) gene is a new oncogene related with leukemogenesis.

干细胞白血病 ( CL ) 因是新发现的与白血病发生有关的癌基因.

Oncogene products are links in signal chains that stretch from the cell surface to cell nucleus.

图2.原癌基因的产物与细胞表面到细胞核的信号传递链有关.