I jumped up to catch a ball and fell over.我跳起来接球，结果摔了个跟头。She fell over and swore loudly.她摔倒了，大骂了一声。The car fell over a cliff and the driver was drowned.汽车从悬崖上翻下来,司机溺水而亡....
In the engine's producing, researching, using and repairing, engine - testing is the linchpin.在发动机的生产研究和应用维修中, 发动机检测是其关键环节.But the linchpin that network channel builds is letter platform build.但网络渠道建设的关键是诚信平台的搭建.He ...
They are going to renovate the old furniture.他们准备将旧家具整修一番。If it isn't, why do they renovate the watchtower?要不然, 为什么他们要修复了望塔?Third, we worked actively to renovate and upgrade traditional industries.三是积极改造和提升传统工业....
A hydrocracking catalyst with high selectivity to middle distillates was developed.开发了一种具有较高的中油选择性的加氢裂化催化剂.Abstract: Typical failures in domestic fixed bed hydrocracking uni t over the years were summarized.文摘: 总结了我国固定床加...