Catalyst precursor composition
[化] 催化剂母体成分
🧩 词语组成解析
precursor
[pri'kɝsɚ]
n. 前辈，前驱，先锋，前任;预兆，先兆，初期形式;[核]前驱波，初级粒子;预报器;
pre…前，预先+curs跑，发生+or名词后缀，表人或物→先跑者→先驱
🗣️ 情景例句
Do you own your house or do you rent?
你们自己有房子还是租房子？
The lion's skin is never cheap.
狮皮从不贱。
I think you need a number 47. The bus stop is along that road, on the right.
我想你需乘47路车。