1. Changes in climate before that period caused severe fluctuation in sea level, resulting in the extinction of the dinosaurs. 在此之前，气候的变化导致了海平面的剧烈波动，恐龙因此灭绝。
2. Changes in climate before the Cretaceous period caused severe fluctuation in sea level, resulting in the extinction of the dinosaurs. 白垩纪以前的气候变化导致了海平面的剧烈波动，引发了恐龙的灭绝。
3. Since potential markets for the minority businesses already exist through the sponsoring companies, the minority businesses face considerably less risk in terms of location and market fluctuation. 由于少数族裔企业的潜在市场已经通过赞助公司而存在，因此少数族裔企业面临的地理位置和市场波动风险要小得多。
4. The same fluctuation back and forth occurs in areas other than intelligence. 同样的上下波动也发生在智力以外的领域。
5. The erratic fluctuation of market prices is in consequence of unstable economy. 经济波动致使市场物价忽起忽落。
