The president reiterated his support for reinstating the expired U.S.ban on assault weapons, but acknowledged Congressional resistance makes that unlikely.
VOA: standard.2009.04.17
Now if all we have to go on is just this semiotic system, it's going to be kind of hard to put up resistance to by the same token we'll say "yellow" means "pause," "green" means "go."
而从语义学角度分析,我们必须不能这么想,这样绿色自然就表示继续,黄色表示暂停“
This is one of the biological properties, the naturally occurring properties of plasmids, is that they exist in microbial populations and they confer on them resistance from toxins that would ordinarily kill them.
这就是这类生物学特性之一,它是质粒所具有的自然特性,这些质粒存在于微生物群体中,并赋予微生物抗性,使它们免于被毒素杀死
On the one hand, there is Iran and its allies in the so-called "resistance" block, including Syria, the Palestinian group Hamas and Lebanon's Hezbollah.
VOA: standard.2010.03.18
You could imagine strategies where you have multiple resistance genes on a plasmid, resistance to Ampicillin, to Penicillin, to Erythromycin for example, and you design strategies for separating out which cells are carrying the plasmid that you're interested in.
若质粒上有多种抗性基因,你就有很多筛选方法,例如对氨苄青霉素,青霉素,红霉素的抗性,而且你可以设计方法分离出,含有你感兴趣质粒的细胞
If we grew these cells on a plate loaded with Ampicillin and we could select cells that have Ampicillin resistance, and this process of selection and cell culture is very important and we'll talk about it more next week.
如果我们在含有氨苄青霉素的,培养基上培养细胞,我们可以筛选出,对氨苄青霉素有抗性的细胞,这个筛选和培养细胞的过程是很重要的,我们下星期会讲到这些
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