This little bird, the stonechat, ramps up its immune system to kill bacteria in the summer before migrating, which requires a lot of extra energy.
这只小鸟,石聊,在迁徙前的夏增强其免疫系统以杀死细菌,这量额外的能量。
关注我们的微信
下载手机客户端
划词翻译
详细解释