我有了头痛的先兆。I had the beginnings of a headache.乌云是下雨的明显先兆.Black clouds are an unmistakable sign of coming rain.那被认为是一种不幸的先兆.It is said to be an omen of misfortune....
Using a computer model they factored in the costs of transplants for those women who die.他们使用计算机模型，把那些死去的女性器官移植的费用计算在内。Bill Venners: Is there a difference between a well - factored program and a well - designed program?比...