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
The only thing holding us back is our financial situation.
只是财政状况未许可，所以才拖延到现在。
The plans are not even made yet.
这计划还不曾有人策划过。
His father told everybody that Eric had been killed in action.
他的父亲告诉大家，埃里克在战争中被打死了。