These animals are unrivalled for their grace and swiftness.这些动物的优雅与速度无与伦比。With incredible swiftness she ran down the passage.她沿通道飞奔而去。The country was occupied with dramatic swiftness.该国极其迅速地被占领了。The secrecy and swiftness of the invasion shocked and amazed army officers.这次入侵的隐秘和迅速令陆军军官们大为震惊。