台湾籍旅美老师今天交给我们的句子是：
There's even some bacteria in dogs mouths which are antibiotic resistant, meaning if it were to spread to humans, we would have trouble treating it.
狗的口腔中有些细菌甚至具有耐药性，也就是说，如果这类细菌感染了人类，会很难治疗。
学习重点：
1.bacteria 细菌
bacteria (n.) 细菌
germ (n.) 细菌
virus (n.) 病毒
2.antibiotic 抗生素
antibiotic (n.) 抗生素
3.resistant 抵抗的
resistant (adj.) 抵抗的
resistance (n.) 抵抗
resilient (adj.) 有韧性的
resilience (n.) 韧性
proof (adj.) 能抵挡的
4.spread 伸展、涂抹
spread (v.) 伸展、涂抹
bread (n.) 面包
5.treat 对待
treat (v.) 对待
retreat (v.) 撤退
