Stepped aging
[化] 阶段时效
🧩 词语组成解析
v. 踏；行走（step的过去式和过去分词）
aging
['eidʒiŋ]
n. 老化;老龄化;（酒等的）陈化;熟化;
v. 使变老;（使）长大( age的现在分词 );使显老;使变老;使苍老;
🗣️ 情景例句
It has a full basement,
全地下室，
Help! I've been kidnapped.
救命呀！我被绑架了！
They all looked at a big and noisy machine in another corner of the machine shop.
他们全都看着机械车间另一角落的一台又大又嘈杂的机器。