Aquatic mammal
高中 Senior High水栖哺乳动物
🧩 词语组成解析
🗣️ 情景例句
I'll call him right now. No point in delaying.
我现在就打给他。没有道理要拖拉。
How long does it take?
火车要开多久？
We owe a lot to the birds and beasts who eat insects but all of them put together kill only a fraction of the number destroyed by spiders.
我们要十分感谢那些吃昆虫的鸟和兽，然而把它们所杀死的昆虫全部加在一起也只相当于蜘蛛所消灭的一小部分。