用“quack”造句大全，quack造句
By turning off the bell — or quack or frog croak — that says "you've got mail!" you'll work more efficiently and can then respond to e-mails when you're ready.
Duck duck waddle back. We like to hear you, quackquackquack!
We can set you up in a decent practice, buy into some old quack who's ready to retire.
