Blood on your shirt cuff at lunch the other day.

那天吃饭时你袖口上还有血。

Then he took off his covert-coat and his blazer, spread them neatly on the top step—knelt on them—turned up his shirt cuffs—and went to work with brace-and-bit near the key-hole.

然后他脱下便衣和西装外套，把它们整齐地铺在最上面的台阶上——跪在上面——把衬衫袖口卷起来——然后在钥匙孔附近带着牙套和咬合器开始工作。