Calclamnidae
钙海参科
🗣️ 情景例句
He studied harder to improve his English.
他更加努力提高英语水平。
We noticed the noise.
我们注意到了那种声音。
It sped downhill at the end of the race and its driver had a lot of trouble trying to stop it.
它在接近终点时，冲下了山坡，驾驶员费了好大劲才把车停下来。