Arsenionization
砷离子透入法
🗣️ 情景例句
Do you think the skirt length is right, Ellen?
觉得这裙子长度合适吗，Ellen？
Poverty is apain, but no disgrace.
贫困是痛苦，但不是耻辱。
But I was extremely pleased with myself.
但我却非常高兴，