Trochidae
马蹄螺科
🗣️ 情景例句
And besides,
更何况，
Only by working hard can we succeed in doing anything.
只有通过努力工作我们才能成功。
While the men had been working inside the ship, the air-line had been giving off oxygen.
当工人们的在船舱里干活时，供气管一直在排放氧气。