自然科学启蒙 - 5: 会"说话"的海豚
- 33 stránok
- 2 hodiny čítania
Describes how dolphins communicate with each other in squeaks, whistles, and pops.
杨晶 Knihy
IT'S READ-AND-FIND-OUT 自然科学启蒙 - 8: 食物的旅行
- 33 stránok
- 2 hodiny čítania
Describes how dolphins communicate with each other in squeaks, whistles, and pops.