Catayst
[机] 催化剂
🗣️ 情景例句
I feel strongly that I can make it.
我坚信我一定能成功。
The timid child would not leave his mother's side.
那个胆小的孩子不愿离开母亲。
The tree was planted near the church fifty years ago, but it is only in recent years that it has gained an evil reputation.
该树是50年前栽在教堂附近的，但只是近几年才得到了一个坏名声。