臺灣籍旅美老師今天交給我們的句子是：

They're extremely patient when it comes to new foods. They'll taste just a tiny portion at first, wait to see if that food makes them sick, and only if it doesn't will they consume the rest. This is called delayed learning, and it's why rats are notoriously difficult to poison.

老鼠見到新食物時，極度地有耐心。一開始它們只會先淺嘗一點點，等著看這樣食物是否會讓它們身體不適，除非真的沒問題，它們才會把剩下的部分給吃完。這叫做延遲式學習，也就是為什么老鼠向來很難被毒死的原因。

學習重點：

1.portion (食物的) 一份；一客
portion (n.) (食物的) 一份；一客
portion sth out (phr.) 分配；分享

2.at first 起初；起先
at first (phr.) 起初；起先
in the beginning (phr.) 一開始

3.consume (尤指大量的) 消費；吃；喝
consume (v.) (尤指大量的) 消費；吃；喝
consumer (n.) 消費者

4.delayed 延誤的；延遲的；延期的
delayed (adj.) 延誤的；延遲的；延期的

5.notorious 臭名昭著的；聲名狼藉的
notorious (adj.) 臭名昭著的；聲名狼藉的
notorious for (phr.) 以...臭名昭著；聲名狼藉

6.poison 下毒；毒害；使中毒
poison (v.) 下毒；毒害；使中毒