1·He had rushed out of his room and knocked his neighbour's door.
连忙出门去敲邻居的门。
2·Oliver is now studying tumors in which the PIDD gene has been knocked out, to see if its absence hinders drug resistance.
Oliver现在研究PIDD基因敲除的肿瘤细胞，看看是否它的缺失阻碍药物耐药性。
3·This line of research started when Yeh and colleagues knocked SENP2 out of mouse DNA and found that the embryos died at about day 10.
本系列研究开始于叶和同事敲除小鼠胚胎dna的SENP2，发现胚胎在大约10天死亡。
4·Thee COINS are usually knocked into felled tree trunks using stones by passers-by, who hope it will bring them good fortune.
这些硬币通常是路人用石头敲进采伐木的树干的，希望以此带来好运。闀。
5·The next step, say the researchers, is to find out what happens when the RSOP1 gene is knocked out of mice.
研究人员说，下一步实验将研究敲除小鼠RSOP1基因后产生的变化。