The risks can be so complex that banks hire mathematicians to puzzle them out.由于风险过高，银行便聘请数学家来解决这些问题。Their reason for doing it is still a puzzle to me.他们为什么干那件事仍然让我费解。I am doubtful whether I can solve the puzzle, but I&#...
在森林中徒步旅行时，即便带的是便携式摄像机也非常费力。Even carrying the camcorder while hiking in the forest was an effort.查利费力地将背包背到楼上自己的公寓里。Charlie humped his rucksack up the stairs to his flat.他涨红了脸，费力地喘着气。He was going red in the face and breat...
He is recovering in hospital after an operation for acute appendicitis.做完急性阑尾炎手术后，他正在医院康复。Objective : To investigate affect of wound infection rate in gangrenous appendicitis after appendectomy.目的了解坏疽型阑尾炎术后放置腹腔引流对切口感染的影响...