•a first-class ticket classmate (n)同班同学 classroom (n)教室 clean (adj & v)干净的,打扫 cleaner (n)清洁工 clear (adj)清楚的,明确的 •It’s not clear to me. clearly (adv)清晰地;明显地 clever (adj)聪明的 click (n & v)单击,点击,作滴答声 • click here to go to our web...