Polyphyodont
a. (鱼类或低等脊椎动物)多换性齿的
🔁 扩展释义
【医】 多套牙的, 多次换牙的
🗣️ 情景例句
There are many natural catastroophes occurring in nature.
自然界里有很多自然灾害发生。
We must stress that these payment terms are very important to us.
我们必须强调这些付款条件对我们很重要。
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。