Stepped construction
[化] 阶梯式结构
🧩 词语组成解析
v. 踏；行走（step的过去式和过去分词）
🗣️ 情景例句
At home I like reading books and listening to music.
我喜欢在家里看书或听音乐。
Come in,please.
请进！
He said that someone might be spying on the station and the pilot was ordered to keep track of the strange object.
他说可能有人正对基地进行侦察，因此命令那个飞行员跟踪那个奇怪的飞行物。