The Maiacetus is running out of air. 慈母鲸的氧气快用完了
At the same time as bats were first moving into the air, 在蝙蝠首次上天的同时
With their freezing temperatures and thin air, 由于寒冷的气温和稀薄的空气
fine-tuning them to no longer fly in the air, 不再将其用于飞行
The greatest of them all, reaching over 100 meters into the air, 其中最大的 高度超过100米
Inside, it's a balmy ten degrees warmer than the surrounding night air. 花的内部比夜间周围的空气温暖10度
smelling the air with their forked tongue to find their prey. 用分叉的舌头嗅探空气 寻找猎物