impact head的用法和樣例：
例句
- Whatever finally emerges, Growe shares still seem to have a good head of steam.
不管最后會出現什么，克羅的股票仍然看起來勢頭不減。 - Yet in 1998 and 1999, the growth momentum slowed down considerably upon the impact of the regional financial turmoil.
不過，由于區內金融風暴影響，這方面的增長勢頭在一九九八和一九九九年大為放緩。
