Celestobarite
锶重晶石
🗣️ 情景例句
my sister and her husband and their daughter.
我妹妹Susan和她丈夫以及他们的女儿。
No gains without pains.
不劳无获。
They have also assumed that all animals, and probably other organisms such as trees,
人们不但认识到所有的动物，大概也认识到所有的有机物，如树木，