A good way to sound confident is to use short punchy sentences.使用短小精悍的句子会让人听上去充满信心。The Captain was a dapper little man with a neat moustache and shiny shoes.船长是个短小精悍的男人,留着整洁的小胡子,皮鞋擦得光亮。They're looking for a snappy slogan to communicate the campaign's message.他们在寻找一句短小精悍的口号来传达运动的要旨。