Pretanning agent
[化] 预鞣剂
🧩 词语组成解析
[化] 预鞣
🗣️ 情景例句
That's all right.
没关系。
He seems very serious, but in fact he has a delightful sense of humor.
他看上去很严肃，其实很诙谐。
He did a lot of research and travelled around the USA looking for information about his ancestors.
他做了大量的研究，在美国跑了许多地方，了解有关祖先的情况。