Actinostromariidae
放射层孔虫科
🗣️ 情景例句
I have just begun to learn and my serve isn't very good.
我刚刚开始学习，发球不太好。
Every dog is valiant at his won door.
狗在家门前条条都凶悍。
It can be unpleasant to live even several miles from an aerodrome;
即使住在离机场几英里以外的地方，机场的噪音也会使人难受。