simple device的用法和樣例：
例句
- A simple device, such as a lever, a pulley, or an inclined plane, that alters the magnitude or direction, or both, of an applied force; a simple machine.
機械裝置一個簡單裝置，如槓桿、滑輪或斜面刨，可以改變作用力的大小或方向或同時改變; 簡單機械裝置 - The inventor evolved his complex machine out of a relatively simple device.
發明者把一個相當簡單的裝置研製成一個複雜的機器。
