Pilidae
球螺科
🗣️ 情景例句
Thank you. I don't believe this.
谢谢。我简直不敢相信。
Try to be there by 8:15 the airport will be crowded.
尽量在8点15分以前赶到那里，到时机场会很拥挤的。
The aeroplane is flying over the river.
飞机正从河上飞过。