第 64 课: 陆海空-2
This is used in the army. 这是陆军用的。
This is used in the navy. 这是海军用的。
This is used in the air force. 这是空军用的。
This is not used by the military. 这不是军用的。
Soldiers wear helmets to protect their heads. 为了保护头,士兵们戴头盔。
Boxers wear helmets to protect their heads. 为了保护头,拳击手们戴头盔。
This wall was built to protect a country. 这座墙是为了保护一个国家而建的。
This castle was built for protection. 这个城堡是为了防卫而建的。