我不愿意伸手去抓那闪亮的黄铜门环，怕把它弄脏。I felt loath to sully the gleaming brass knocker by handling it.蓝墨水弄脏了她的新衣服.She messed up her new dress with blue ink.主人若放任狗弄脏人行道将受处罚.Owners who allow their dogs to foul the footpath will be fined....
他只能零星地听懂一两个单词。He could only understand a word here and there.填出所缺少的单词，你就会赢得一件T恤。Supply the missing word(s) and you could win a T-shirt.你们要做的就是调换单词的位置以使句子意义通顺。Your task is to interchange words so that the sentence makes s...
Objective To study the clinical effects of demineralized dentin matrix ( DDM ) as a apexificating agent.目的观察同种脱矿牙本质基质 ( DDM ) 用于根尖诱导成形术的临床效果.Overlapping , nonoverlapping and overrelaxation DDM are discussed.讨论了重叠DDM 、 非重...