| 1. | The majority of aberrations are sporadic although on rare occasions a chromosomal disorder is directly inherited .
尽管偶尔可见一种染色体疾病是直接遗传的，但是大量的染色体异常是散发的。 |
| 2. | Only on rare occasions now the old fire glowed in her again
她只是一位强壮美丽和多子女的母亲，难得看到她从前的热情的火焰。 |
| 3. | On rare occasions , these bird viruses can infect other species , including pigs and humans
这些禽鸟病毒极不容易传染给其它物种，包括猪和人类。 |
| 4. | Fixed an issue where on rare occasions vehicle ' s bonnets / wings would be invisible on entering a race
修正了进入比赛时有很少的情况会看不到汽车的罩（ ？ ）尾翼的问题。 |
| 5. | " we teach people how to respect it and , on rare occasions , have it in moderation , " he said
他说： "我们教人们如何重视碳水化合物，并在个别情况下适当摄入碳水化合物。 |
| 6. | On rare occasions , a memory card may not record to full capacity due to its writing speed
在极罕见的情况下，记忆卡可能会因为写入速度的限制而无法用尽其容量来拍摄影像。 |
| 7. | On rare occasions , red fire ant stings can cause severe acute allergic reaction which can be fatal
在罕见的情况下，被红火蚁螫刺后，更可能会引起致命的严重急性过敏反应。 |
| 8. | On rare occasions , red fire ant stings can cause severe acute allergic reaction which can be fatal
在罕见的情况下，被红火蚁螫刺后，更可能会引起致命的严重急性过敏反应。 |
| 9. | Mr linton would take her with him a mile or so outside , on rare occasions ; but he trusted her to no one else
林敦先生偶尔也会带她到外面走一哩来路可是他不把她交给别人。 |
| 10. | It is the same kind of excuse . who buys a car without trying it out ? well , on rare occasions you do
同一道理，谁买车会不先试过的，极少的情况会是这样我试过，你能相信吗？ |
