1. The invention of the microchip announced a new generation of computers. 微芯片的发明预示了新一代计算机的诞生。
2. The faces around him displayed nothing but shock; he might have announced that he wanted to borrow one of their arms. 他周围的脸表现出的神色除了震惊还是震惊；他或许宣告了它需要借他们之一的武器。
3. In 2003, President Bush announced a plan to return humans to the moon by 2020 and use the moon as a base to go on to Mars. 2003年，美国总统布什宣布了一项计划，目的是使人类在2020年重新登陆月球，并利用月球作为登陆火星的基地。
