Cephalaspida
头甲鱼目
🗣️ 情景例句
A whole day's work.
一整天的成果呀。
The sight of the food made my mouth water.
看见食物，我就垂涎欲滴。
This is not easy, and may require two porpoises working together.
这并非易事，可能需要两只海豚合伙干才行。