Piperazine citrate is the drug of choice in the treatment of Ascaris infestations.枸橼酸哌嗪治疗蛔虫感染是最好的药物.The Ascaris adults may perforate a suture line or cause a bile or pancreatic duct obstruction.成虫可穿破缝线或引起胆管或胰腺管阻塞.Ascaris...
He has a valuable collection of stamps.他收藏了很有价值的邮票。The stamps had to be paid for in sterling.这些邮票必须用英镑购买。He occupied himself in collecting stamps.他忙于集邮。There are miscellaneous tools, pliers , putty knife, polarity stamps...
He told the children to start moving clockwise around the room.他让孩子们开始按顺时针方向绕着房间走。Rotate the head clockwise and counterclockwise.按顺时针方向转动头部，然后再逆时针旋转。The dance moves in a counter-clockwise direction.这支舞是按逆时针方向跳的。...