Precipitates are usually collected by centrifugation at intervals.常常是用离心法分段收集沉淀的.Try to get into the habit of eating at least three small meals a day, at equally spaced intervals.尽量养成每天至少吃3顿小餐的习惯，而且每餐的间隔要相同。She began to ...
Peru: Cuzco and Apur í mac and Huallaga rivers & Colombian border.秘鲁: 库斯科,阿亚库乔地区,埃内河谷,阿普里马克省和瓦亚加河 和 哥伦比亚边境.The incas believed that cuzco was the navel of the universe.印加人认为库斯科是宇宙的中心....
应该鼓励这个民族从怠惰的状态中奋起.The nation must be aroused from its unwillingness to work.豪言壮语促使他奋起行动.He was roused to action by courageous words.他突然奋起.He made a sudden spurt....
degenerative diseases such as arthritis诸如关节炎之类的变性病It produces a degenerative effect.它起着负反馈的作用.As a result of these degenerative changes, the lymphoreticular centers of the entire body are stimulated.这些变性的变化刺激整个身体的淋巴网状中心....