Isopleth
[计] 等值线
✅ 同义词
🗣️ 情景例句
There's only one problem.
只有一个问题。
Pervert!
色狼！
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。