🧩 词语组成解析
school
[skul]
n. 学校;上学;学院;群;
vt. 训练，锻炼;教育，教导;约束;给…上学;
🗣️ 情景例句
to have a family and grandchildren.
拥有一个家庭和孙子们。
His heart cannot be pure whose tongue is not clear.
嘴不净者心不纯。
So the number of stars that we know exist is now estimated at about 300 million million million.
因此，我们所知道的现有恒星数目估计约有30亿×1000亿颗。