中文词 · Chinese word
一成不变
yī chéng bù biàn — (idiom) immutable; impervious to change; set in stone
HSK 3.0 L7, HSK newest L7 · study the lists
中文词 · Chinese word
yī chéng bù biàn — (idiom) immutable; impervious to change; set in stone
HSK 3.0 L7, HSK newest L7 · study the lists