four row keyboard

例句：

1. 1.The new computer has a four-row keyboard for easy navigation.
   这台新电脑有一个四行键盘，便于导航。
2. 2. Many modern phones have a four-row keyboard for quick typing.
   许多现代手机都有一个四行键盘，便于快速打字。
3. 3. The teacher demonstrated how to use the four-row keyboard on the computer.
   老师演示了如何使用电脑的四行键盘。