Raney's catalyst
[医] 兰尼氏催化剂, 海绵状镍催化剂
🧩 词语组成解析
🗣️ 情景例句
It's just ... slow.
只是……太慢了。
The phone is busy.
电话占线。
It contained five large bars of chocolate and three bags of sweets!
里面装了5大块巧克力和3袋糖果！