But animals don't always speak with their mouths

His sister used to grumble about all these animals and said they made the house untidy.
grumble抱怨
Taxpayers are grumbling about the waste of government money,as usual.
纳税人又像往常一样抱怨政府浪费钱财。
发轰隆声
Thunder grumbled in the distance.
远处雷声隆隆。


Then they flew off—and Gub–Gub came out from behind his barrel to see them go. Up and up and up they went—higher and higher and higher still. Then, when the Doctor could only just see them, they parted company and started going off all different ways—North, East, South and West, looking like tiny grains of black sand creeping across the wide, blue sky. "My gracious!" said Gub–Gub in a hushed voice. "What a height! I wonder they don't scorch their feathers—so near the sun!"
scorch烧焦
She scorched the cake.
她把蛋糕烤焦了。
严厉批评 
His article was scorched by his government.
他的论文受到他所在国家政府的严厉批评。


The lad isn't old enough to be knocking around the world by himself. Boys aren't like ducklings—they have to be taken care of till they're quite old…
knock around
  ·to spend time in (a place) without having a goal or purpose 
  ·to wander around (a place) <He spent the summer knocking around (in) Europe.>

关于钱
"Money is a nuisance," he used to say. "We'd all be much better off if it had never been invented. What does money matter, so long as we are happy?"
"Money," he said, "is a terrible nuisance. But it's nice not to have to worry."
nuisance讨厌/麻烦的东西
public nuisance  妨害公众安宁
noise nuisance 噪声危害 


动物并不是只用嘴说话
"But animals don't always speak with their mouths," said the parrot in a high voice, raising her eyebrows. "They talk with their ears, with their feet, with their tails—with everything. Sometimes they don't WANT to make a noise. Do you see now the way he's twitching up one side of his nose?" "What's that mean?" asked the Doctor. "That means, "Can't you see that it has stopped raining?"" Polynesia answered. "He is asking you a question. Dogs nearly always use their noses for asking questions."


自以为是的人类们
"I was thinking about people," said Polynesia. "People make me sick. They think they're so wonderful. The world has been going on now for thousands of years, hasn't it? And the only thing in animal–language that PEOPLE have learned to understand is that when a dog wags his tail he means "I'm glad!"—It's funny, isn't it? You are the very first man to talk like us. Oh, sometimes people annoy me dreadfully—such airs they put on—talking about "the dumb animals." DUMB!—Huh! Why I knew a macaw once who could say "Good morning!" in seven different ways without once opening his mouth. He could talk every language—and Greek. An old professor with a gray beard bought him. But he didn't stay. He said the old man didn't talk Greek right, and he couldn't stand listening to him teach the language wrong. I often wonder what's become of him. That bird knew more geography than people will ever know.—PEOPLE, Golly! I suppose if people ever learn to fly—like any common hedge–sparrow—we shall never hear the end of it!"
never/not hear the end of it
ed to say that someone will keep talking about something for a long time 
<If it turns out that he's right, we'll never hear the end of it.>