Penton
n. [微](在完整的病毒颗粒中由5个外壳包围而成的)腺病毒亚单位
🗣️ 情景例句
You cannot believe how sorry I am.
你不知道我感到多么抱歉。
We know that you are leading exporters of coal and you can provide the quantity we need.
我们知道贵方是主要煤炭出口商，能满足我们的需求量。
Let me see. It's about four thirty.
我看看，大约四点半了。