Some researchers contend that carcinogens may turn healthy cells into cancer cells.有些研究人员认为,致癌物质能使健康细胞变成癌细胞.Carcinogens may turn healthy cells into cancer cells.致癌物质能使健康细胞变成癌细胞。Chemical carcinogens generally require meta...
I'm an orphan and pretty much grew up on my own.我是个孤儿，差不多是靠自己长大的。He was an orphan and lived with his uncle.他是个孤儿，和他叔叔一起生活。When his parents were killed in an accident, he became an orphan.当他的父母在事故中丧生之后, 他便成了孤儿....
我和史蒂夫成了知己，几乎时刻相伴。Steve and I became soul mates, near-constant companions.这一产业和初期铁路的建造相伴而生。The industry is coeval with the construction of the first railways.记忆力减退是与老年相伴出现的.Loss of memory is a natural concomitant of old a...