Ple
abbr. 个性化学习环境（Personal Learning Environment）
🗣️ 情景例句
I had a great interview
我参加了一次很精彩的面谈
When is the ship supposed to leave?
船应该在什么时候开？
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。