Examples
shǒu cì首次dìng gòu订购kě可huò获jiǔ九wǔ五zhé折de的tè bié特别yōu huì优惠。
首次订购可获九五折的特别优惠。
Your initial order is subject to a special discount of 5%.
首次遇到汤姆，我以为他是女的。
The first time I saw Tom, I thought he was a girl.
在一九五八年，巴西首次夺得了世界杯的冠军。
In 1958, Brazil won its first World Cup victory.