Calcia
氧化钙
🗣️ 情景例句
Are they always that difficult to make?
领结这样难打吗？
Where did you grow up?
你在哪儿长大？
It is no use offering the manual labourer, tired out with a hard week's sweat and effort,
对于流汗出力干了一周苦活的体力劳动者来说，是不合适的；