Cascade concentrator
[化] 阶式蒸浓器
🧩 词语组成解析
concentrator
['kɒnsenˌtreɪtə]
n. 集中器;集线器;
🗣️ 情景例句
I want to keep the after-school programs--
我要保存这些课外活动--
You may come home with me any time.
你随时可以来我家。
Its origin is still a mystery now.
它的起源至今仍是个谜。