Witwatersrand
威特沃特斯兰德
🗣️ 情景例句
of forty-three years of on-the-job training.
关于我四十三年的工作经历。
The day is short but the work is much.
工作多，光阴迫。
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。