请于今日将随函附上的捐款表格用所提供的邮资预付的信封寄回。Return the enclosed Donation Form today in the prepaid envelope provided.请寄上18.99英镑的支票，外加2英镑的邮资和包装费。Send a cheque for £18.99 plus £2 for postage and packing.邮资单据不能当作收据。Proof of postage will n...
The dynamic SIF variation was found to lag behind the stress - pulse impingement by several microseconds.人们发现,动态应力强度因子的变化滞后于应力脉冲冲击几微秒.Shoulder impingement syndrome is one of the most common painful shoulder disorders.肩夹击...
这些障碍物对于想要往上游游动的鱼儿来说是致命的。The barriers are lethal to fish trying to swim upstream.他在那里有一栋房子，但在河上游几英里处。He has a house down there but it's miles up river.上游的城市将污水排放到河里。Cities upstream use the river to get rid of sewage....