| 例句 |
The infection was bacterial in origin. 这种感染是由细菌引起的。Food poisoning is caused by a bacterial organism.食物中毒是由细菌引起的。The epidemic was caused by a deadly germ.这一流行病是由一种致命细菌引起的。Sometimes it's hard to tell whether illnesses result from bacteria or viruses.有时候很难分辨疾病到底是细菌引起的还是病毒引起的。Exactly which bacteria cause the infection is still unknown.到底是什么细菌引起的感染还不清楚。Is the illness caused by bacteria or a virus?这种病是细菌引起的还是病毒引起的？ |