On reflection, he says, he very much regrets the comments.经过反省，他说自己对所作的评论感到非常后悔。Five years later she regrets having given up her home.5年后她对当初放弃自己的家感到后悔。Lillee said he had no regrets about retiring.利里说他没后悔退休。...
Scientists are still studying how the compound prevents pathogens from infecting cells.科学家仍在研究这种化合物如何阻止病原菌侵染细胞.Unfortunately, the responsible pathogens were still unknown.不幸的是, 引起疾病的病原仍不明了.Nonexposure of susceptible plan...