大师作文网想问calls 这个单词在这里面什么意思
来源：学生作业帮 编辑：大师作文网作业帮 分类：英语作业 时间：2024/09/20 01:07:12
想问calls 这个单词在这里面什么意思
Cranes are large birds.One of the earliest methods of classifying cranes was based
on the calls they make during the breeding season.
Explain why biologists could use calls to investigate relationships between different
species of crane.
Cranes are large birds.One of the earliest methods of classifying cranes was based
on the calls they make during the breeding season.
Explain why biologists could use calls to investigate relationships between different
species of crane.
calls指的是鹤在繁殖季节的各种叫声