In an unflattering homage to muslim tradition , asimov even casts the mule as a mutant , a freak of nature so unexpected that nothing in human science could possibly have explained or anticipated him .
So then , the fish were done in by disease , and the arkansas birds were probably killed either by a freak weather event or some fireworks .
如此说来,那些鱼因疾病致死,阿肯色的鸟儿则可能因反常天气事件或某些焰火致死。
Last month explorers at the team 's ice base some 680 miles further south reported a three-minute rain shower , which they described as a freak event .