Catalyst bed
[建] 催化剂床
🧩 词语组成解析
bed
[bɛd]
n. 床;苗圃;河床;（地下由黏土、岩石等构成的）地层;
vt. 把…固定在;（某人）发生性关系;给人铺床;
vi. 上床;分层;
🗣️ 情景例句
My mother and father
我父母
A plant may produce new flowers; man is young but once.
花有重开日，人无再少年。
I am very well. Did you have a good summer holiday?
我很好。你暑假过得好吗？