He had to lean on Dan to keep from falling.他不得不靠在丹身上以免摔倒。I horse around quite a lot, just to keep from getting bored.我胡闹了一阵儿, 只是为了摆脱厌烦.He couldn't keep from laughing.他禁不住笑了....
Two ways to make the electrical gaging point clear have been raised.提出了两种电测布点标值的方法:分数值法和带分数值法.This specification details the dimensions and gaging methods for tapered pipe threads.这个规定细化了锥管螺纹的尺寸测量和计量方法....
Annual broadleaf and grass weeds are major problems.主要杂草是一年生阔叶杂草和禾本科杂草.To the south Sycamore trees create a tall , broadleaf canopy.在城区的南部,是一片树冠宽大枫树林.And that of broadleaf tree specieswere occupied 13 % and 15 % respecti...
secretion of milk by the mammary glands乳腺的奶汁分泌Objective : To study the diagnostic methods of mammary duct ectasia after operation.目的: 探讨乳腺导管扩张症的术前诊断方法.Gynecopathy : Irregular Menstruation, Dysmenorrhea Climacteric Syndro...