英语语法分析

We signed a triennial contract yesterday.

昨日我们签了一项三年的合约。

According to the agreement, the bank provided 30 billion annually triennial comprehensive credit lines.

根据协议，农行提供三年期每年30亿元的综合授信额度。

Usually, biennial or triennial events are held in big cities in China like Beijing, Shanghai and Guangzhou.

冯博一说，这样的双年或三年展的艺术活动通常都是在北京、上海、广州这样的大城市举行。