台湾籍旅美老师今天交给我们的句子是：

The tea trade was so lucrative that the world's fastest sailboat, the clipper ship, was born out of intense competition between Western trading companies. All were racing to bring their tea back to Europe first to maximize their profits.
茶叶贸易实在太好赚了，以至于当时世界上最快的船--快速帆船便是因应西方贸易的激烈竞争所产生。大家都急切地想要抢先将茶叶运回欧洲，以将利润发挥到极致。

学习重点：

1.trade 贸易
trade (v.) 贸易

2.lucrative 有利可图的
lucrative (adj.) 有利可图的
lucre (n.) (贬)金钱、利润

3.intense 强烈的
intense (adj.) 强烈的
intensify (v.) 加强、更激烈
tense (adj.) 拉紧的、紧绷的

4.competition 竞争、角逐
competition (n.) 竞争、角逐
competitive (adj.) 有竞争力的

5.profit 利润、收益
profit (n.) 利润、收益
profitable (adj.) 有利的