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
Same old Pete Waters.
Pete Waters还是老样子。
He knocks boldly at the door who brings good news.
彼叩门声响，必来报佳音。
It is four o'clock.In the afternoon, Mrs.Sawyer usually drinks tea in the living room.But this afternoon, she is drinking tea in the garden.
现在是4点钟，下午，索耶夫人通常是在客厅里喝茶，但今天下午，她正在花园里喝茶。