Nokia 's gross margin has swung between about 32 and 38 per cent over the past five years ; every time it hit the top of that range , it was selling a successful high-end phone .
The mood in chile over the past few days has swung as violently as buildings did in the early hours of february 27th .
过去几天围绕在智力的气氛就如2月27号较早时的建筑一样在摇摆。
A battle for supremacy between two dvd formats swung sharply yesterday when blockbuster , the leading us video rental chain , increased the number of its stores that stock blu-ray discs .