Stepped attenuator
[电] 梯级衰减器
🧩 词语组成解析
v. 踏；行走（step的过去式和过去分词）
n. 衰减器\\n[化] 衰减器; 弱化子
🗣️ 情景例句
But I have promises to keep,
但是我有约要赴
Do well is better than say well.
说得好不如做得好。
The children compete against each other to reach the other end of the pool.
孩子们比赛看谁先到达游泳池的另一端。