1. catalog n. 目录
The store sent us a new catalog of its merchandise.
商店寄给我们一份新的商品目录 。
2. decay v. 腐朽,腐烂
Our powers decay in old age.
我们的精力在年老时衰退 。
3. transportation n. 交通运输
The American simply regards a car as a means of transportation.
美国人把汽车纯粹看成是一种运输工具 。
4. vanish v. 突然不见;消失
He seemed to vanish into thin air.
他不留痕迹地消失了 。
5. frontier n. 前线
Frontier life could be lonely and empty.
边疆生活不用说是空虚寂寞的 。
6. innovation n. 革新,改革,创新
Continuous innovation is also necessary for success.
不断的技术革新也是成功的必要条件 。