她讲话时斟酌再三，说得非常慢。She spoke very slowly, weighing what she would say.他对自己的每次行动都再三思量是否合适。He wonders about the appropriateness of each move he makes.当局斟酌权衡再三才宣布他们的决定。The authorities took time to pronounce their verdicts....
The country's economic plight is strangling its scientific institutions.该国的经济困境阻碍了其科研机构的工作进展。People use scientific terms with no clear idea of their meaning.人们使用科学术语，但并非很清楚其含义。Many, if not most, scientific papers ar...
"Surely there's something we can do?" interjected Palin.“我们一定可以做点儿什么吧？”佩林突然插话道。" What's all this? " the district chief interjected.区长道: “ 干什么?After a moment's break , Mel interjected.在短暂的沉默之后, 梅尔插了进来....
分析了摆动从动件盘形凸轮机构的压力角与基本尺寸之间的关系.The relationship of cam with oscillating followers pressure angle and radius of basic circle were analyzed.凸轮传动结构简单、紧凑,能方便实现从动件预期的运动规律.The structure of cam transmission is simple and compact ...