Sphaeridium
球棘(海胆)
🗣️ 情景例句
We had a unique experience here.
我们在这里获得了宝贵的经验。
How much does packing take up of the total cost of the goods?
包装占货物总成本的百分比是多少？
I read a few lines, but I did not understand a word.
我读了几行，但一个字也不懂。