🗣️ 情景例句
the kids in the ward
住院的孩子们
Walking to enjoy the sights is enjoyable.
一面浏览景色一面散步最为快乐。
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。